SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 12)*

                            LAMAR ADVERTISING COMPANY
                                (Name of Issuer)

                CLASS A COMMON STOCK, PAR VALUE $0.001 PER SHARE
                         (Title of Class of Securities)

                                    512815101
                                 (CUSIP Number)

                               SPO Advisory Corp.
                         591 Redwood Highway, Suite 3215
                          Mill Valley, California 94941
                                 (415) 383-6600

                                 with a copy to:

                                Alison S. Ressler
                             Sullivan & Cromwell LLP
                             1888 Century Park East
                       Los Angeles, California 90067-1725
                                 (310) 712-6600

           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                  August 8, 2012
             (Date of Event which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
Schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[_].

Note. Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



                                                              Page 1 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON SPO Partners II, L.P.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS WC
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
--------------------------------------------------------------------------------
                          7.  SOLE VOTING POWER
                              14,953,784 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.  SHARED VOTING POWER
 BENEFICIALLY OWNED           -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.  SOLE DISPOSITIVE POWER
                              14,953,784 (1)
                          ------------------------------------------------------
                          10. SHARED DISPOSITIVE POWER
                              -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         14,953,784
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         19.1%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         PN
--------------------------------------------------------------------------------

(1) Power is exercised through its sole general partner, SPO Advisory Partners,
    L.P.



CUSIP No. 512815101                                           Page 2 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON SPO Advisory Partners, L.P.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS Not Applicable
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 14,953,784 (1)(2)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 14,953,784 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         14,953,784
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         19.1%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         PN
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of SPO Partners II, L.P.
(2) Power is exercised through its sole general partner, SPO Advisory Corp.



CUSIP No. 512815101                                           Page 3 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         San Francisco Partners, L.P.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         WC
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         California
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 614,530 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 614,530 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         614,530
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         0.8%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         PN
--------------------------------------------------------------------------------

(1) Power is exercised through its sole general partner, SF Advisory Partners,
    L.P.



CUSIP No. 512815101                                           Page 4 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         SF Advisory Partners, L.P.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         Not Applicable
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 614,530 (1)(2)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 614,530 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         614,530
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         0.8%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         PN
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of San Francisco
    Partners, L.P.
(2) Power is exercised through its sole general partner, SPO Advisory Corp.



CUSIP No. 512815101                                           Page 5 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         SPO Advisory Corp.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         Not Applicable
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 15,568,314 (1)(2)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 15,568,314 (1)(2)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         15,568,314
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         19.8%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         CO
--------------------------------------------------------------------------------

(1) Solely in its capacity as the sole general partner of SPO Advisory
    Partners, L.P. with respect to 14,953,784 of such shares; and solely
    in its capacity as the sole general partner of SF Advisory Partners, L.P.
    with respect to 614,530 of such shares.

(2) Power is exercised through its two controlling persons, John H. Scully and
    Edward H. McDermott.



CUSIP No. 512815101                                           Page 6 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         John H. Scully
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         PF and Not Applicable
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(e) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         USA
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 148,900 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              15,568,314 (2)
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 148,900 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 15,568,314 (2)
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         15,717,214
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         20.0%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         IN
--------------------------------------------------------------------------------

(1) Of these shares, 15,600 shares are held in the John H. Scully Individual
    Retirement Accounts, which are self-directed, and 133,300 shares may be
    deemed to be beneficially owned by Mr. Scully solely in his capacity as
    controlling person, sole director and executive officer of Phoebe Snow
    Foundation, Inc.

(2) These shares may be deemed to be beneficially owned by Mr. Scully solely
    in his capacity as one of two controlling persons of SPO Advisory Corp.



CUSIP No. 512815101                                           Page 7 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         Phoebe Snow Foundation, Inc.
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         WC
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         California
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 133,300 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 133,300 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         133,300
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         0.2%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         CO
--------------------------------------------------------------------------------

(1) Power is exercised through its controlling person, sole director and
    executive officer, John H. Scully.




CUSIP No. 512815101                                           Page 8 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         Eli J. Weinberg
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         PF
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(d) OR 2(f) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         USA
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 126
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 126
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         126
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         **0.1%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         IN
--------------------------------------------------------------------------------

**  Denotes less than.




CUSIP No. 512815101                                           Page 9 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         Ian R. McGuire
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         PF
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         USA
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 1,156 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              -0-
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 1,156 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 -0-
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         1,156
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         **0.1%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         IN
--------------------------------------------------------------------------------

**  Denotes less than.

(1)  Of these shares, 256 shares are held in the Ian R. McGuire Individual
     Retirement Account, which is self-directed.



CUSIP No. 512815101                                          Page 10 of 18 pages

--------------------------------------------------------------------------------
1.       NAME OF REPORTING PERSON
         Edward H. McDermott
--------------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:           (a)     [_]
                                                                     (b)     [X]
--------------------------------------------------------------------------------
3.       SEC Use Only
--------------------------------------------------------------------------------
4.       SOURCE OF FUNDS
         PF and Not Applicable
--------------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
         ITEMS 2(d) OR 2(e) [_]
--------------------------------------------------------------------------------
6.       CITIZENSHIP OR PLACE OF ORGANIZATION
         USA
--------------------------------------------------------------------------------
                          7.     SOLE VOTING POWER
                                 3,834 (1)
                          ------------------------------------------------------
  NUMBER OF SHARES        8.     SHARED VOTING POWER
 BENEFICIALLY OWNED              15,568,314 (2)
 BY EACH REPORTING        ------------------------------------------------------
     PERSON WITH          9.     SOLE DISPOSITIVE POWER
                                 3,834 (1)
                          ------------------------------------------------------
                          10.    SHARED DISPOSITIVE POWER
                                 15,568,314 (2)
--------------------------------------------------------------------------------
11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         15,572,148
--------------------------------------------------------------------------------
12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
         SHARES [_]
--------------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         19.9%
--------------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON
         IN
--------------------------------------------------------------------------------

(1)  Of these, 600 shares are held in the Edward H. McDermott Individual
     Retirement Account, which is self-directed.

(2)  These shares may be deemed to be beneficially owned by Mr. McDermott solely
     in his capacity as one of two controlling persons of SPO Advisory Corp.


                                                             Page 11 of 18 pages

         This Amendment No. 12 amends the Schedule 13D (the "Original 13D")
filed with the Securities and Exchange Commission ("SEC") on August 22, 2005 and
as amended on May 10, 2006, July 19, 2006, July 31, 2007, October 2, 2007, March
21, 2008, April 15, 2008, June 26, 2008, July 1, 2008, July 7, 2008, July 15,
2008 and September 19, 2008. Unless otherwise stated herein, the Original 13D,
as previously amended, remains in full force and effect. Terms used therein and
not defined herein shall have the meanings ascribed thereto in the Original 13D.

ITEM 2. IDENTITY AND BACKGROUND.

         Item 2(a) is hereby amended and restated in its entirety as follows:

         (a) The undersigned hereby file this Schedule 13D Statement on behalf
of SPO Partners II, L.P., a Delaware limited partnership ("SPO"), SPO Advisory
Partners, L.P., a Delaware limited partnership ("SPO Advisory Partners"), San
Francisco Partners, L.P., a California limited partnership ("SFP"), SF
Advisory Partners, L.P., a Delaware limited partnership ("SF Advisory
Partners"), SPO Advisory Corp., a Delaware corporation ("SPO Advisory Corp."),
John H. Scully ("JHS"), Phoebe Snow Foundation, Inc., a California corporation
("PS Foundation"), Eli J. Weinberg ("EJW"), Ian R. McGuire ("IRM") and Edward
H. McDermott ("EHM"). SPO, SPO Advisory Partners, SFP, SF Advisory Partners,
SPO Advisory Corp., JHS, PS Foundation, EJW, IRM and EHM are sometimes
hereinafter referred to as the "Reporting Persons." The Reporting Persons are
making this single, joint filing because they may be deemed to constitute a
"group" within the meaning of Section 13(d)(3) of the Securities Exchange Act
of 1934, as amended (the "Act"), although neither the fact of this filing nor
anything contained herein shall be deemed to be an admission by the Reporting
Persons that a group exists.

         The Original 13D, as amended, listed William E. Oberndorf ("WEO"),
William J. Patterson ("WJP") and the Elizabeth R. and William J. Patterson
Foundation, a California corporation (the "Patterson Foundation") as "Reporting
Persons." As of March 31, 2012, WEO was no longer a controlling person of SPO
Advisory Corp. As a result, WEO is no longer a "Reporting Person" for all
purposes under this Amendment and the Original 13D. WJP passed away on
September 24, 2010. As a result, WJP and the Patterson Foundation are no longer
"Reporting Persons" for all purposes under this Amendment and the Original 13D.

         All references to WEO, WJP and the Patterson Foundation in item
2(b)-(c) are hereby deleted in their entirety. All references to the four
controlling persons of SPO Advisory Corp are hereby revised to two controlling
persons of SPO Advisory Corp.


                                                             Page 12 of 18 pages

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         Item 3 is hereby amended and restated in its entirety as follows:

         The source and amount of the funds used or to be used by the Reporting
Persons to purchase Shares are as follows:


NAME                           SOURCE OF FUNDS                       AMOUNT OF FUNDS
---------------------          ---------------------------           ---------------
                                                               
SPO                            Contributions from Partners           $634,608,377
SPO Advisory Partners          Not Applicable                        Not Applicable
SFP                            Contributions from Partners           $26,672,358
SF Advisory Partners           Not Applicable                        Not Applicable
SPO Advisory Corp.             Not Applicable                        Not Applicable
JHS                            Not Applicable and Personal Funds     $674,251
PS Foundation                  Contributions from Shareholders       $13,096,109
EJW                            Personal Funds                        $5,672
IRM                            Personal Funds                        $55,943
EHM                            Not Applicable and Personal Funds     $19,562


ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

         Item 5 is hereby amended and restated in its entirety as follows:

         (a) Percentage interest calculations for each Reporting Person are
based upon the Issuer having 78,447,313 total outstanding shares of Class A
common stock as reported on the Issuer's 10-Q filed with the Securities and
Exchange Commission on August 8, 2012.

         SPO

         The aggregate number of Shares that SPO owns beneficially, pursuant to
Rule 13d-3 of the Act, is 14,953,784 Shares, which constitutes approximately
19.1% of the outstanding Shares.

         SPO Advisory Partners

         Because of its position as the sole general partner of SPO, SPO
Advisory Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 14,953,784 Shares, which constitutes approximately 19.1% of
the outstanding Shares.

         SFP

         The aggregate number of Shares that SFP owns beneficially, pursuant to
Rule 13d-3 of the Act, is 614,530 Shares, which constitutes approximately 0.8%
of the outstanding Shares.



                                                             Page 13 of 18 pages

         SF Advisory Partners

         Because of its position as the sole general partner of SFP, SF Advisory
Partners may, pursuant to Rule 13d-3 of the Act, be deemed to be the beneficial
owner of 614,530 Shares, which constitutes approximately 0.8% of the outstanding
Shares.

         SPO Advisory Corp.

         Because of its positions as the sole general partner of each of SPO
Advisory Partners and SF Advisory Partners, SPO Advisory Corp. may, pursuant to
Rule 13d-3 of the Act, be deemed to be the beneficial owner of 15,568,314 Shares
in the aggregate, which constitutes approximately 19.8% of the outstanding
Shares.

         JHS

         Individually, and because of his positions as a control person of SPO
Advisory Corp. and controlling person, sole director and executive officer of PS
Foundation, JHS may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 15,717,214 Shares, which constitutes approximately 20.0% of
the outstanding Shares.

         PS FOUNDATION

         The aggregate number of Shares that PS Foundation owns beneficially,
pursuant to Rule 13d-3 of the Act, is 133,300 Shares, which constitutes
approximately 0.2% of the outstanding Shares.


                                                             Page 14 of 18 pages

         EJW

         The aggregate number of Shares that EJW owns beneficially, pursuant to
Rule 13d-3 of the Act, is 126 Shares, which constitutes less than 0.1% of the
outstanding Shares.

         IRM

         The aggregate number of Shares that IRM owns beneficially, pursuant to
Rule 13d-3 of the Act, is 1,156 Shares, which constitutes less than 0.1% of the
outstanding Shares.

         EHM

         Individually and because of his position as a control person of SPO
Advisory Corp., EHM may, pursuant to Rule 13d-3 of the Act, be deemed to be the
beneficial owner of 15,572,148 Shares, which constitutes approximately 19.9% of
the outstanding Shares.

         To the best of the knowledge of each of the Reporting Persons, other
than as set forth above, none of the persons named in Item 2 hereof is the
beneficial owner of any Shares.

         (b)

         SPO

         Acting through its sole general partner, SPO has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 14,953,784
Shares.

         SPO Advisory Partners

         Acting through its sole general partner and in its capacity as the sole
general partner of SPO, SPO Advisory Partners has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 14,953,784
Shares.

         SFP

         Acting through its sole general partner, SFP has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 614,530
Shares.

         SF Advisory Partners

         Acting through its sole general partner and in its capacity as the sole
general partner of SFP, SF Advisory Partners has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 614,530 Shares.

         SPO Advisory Corp.

         Acting through its controlling persons and in its capacities as the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
SPO Advisory Corp. has the sole power to vote or to direct the vote and to
dispose or to direct the disposition of 15,568,314 Shares in the aggregate.


                                                             Page 15 of 18 pages

         JHS

         As one of two controlling persons of SPO Advisory Corp., which is the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
JHS may be deemed to have shared power with EHM to vote or to direct the vote
and to dispose or to direct the disposition of 15,568,314 Shares held by SPO
and SFP in the aggregate. In addition, JHS has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 15,600 Shares
held in the John H. Scully Individual Retirement Accounts, which are
self-directed individual retirement accounts, and 133,300 Shares held by the PS
Foundation, for which JHS is the controlling person, sole director and
executive officer.

         PS FOUNDATION

         Acting through its controlling person, PS Foundation has the sole power
to vote or to direct the vote and to dispose or to direct the disposition of
133,300 Shares.

         EJW

         EJW has the sole power to vote or to direct the vote and to dispose or
to direct the disposition of 126 Shares.

         IRM

         IRM has the sole power to vote or to direct the vote and to dispose or
to direct the disposition of 256 Shares held in the Ian R. McGuire Individual
Retirement Account, which is a self-directed individual retirement account. In
addition, IRM has the sole power to vote or to direct the vote and to dispose
or to direct the disposition of 900 Shares.

         EHM

         As one of two controlling persons of SPO Advisory Corp., which is the
sole general partner of each of SPO Advisory Partners and SF Advisory Partners,
EHM may be deemed to have shared power with JHS to vote or to direct the vote
and to dispose or to direct the disposition of 15,568,314 Shares held by SPO
and SFP in the aggregate. In addition, EHM has the sole power to vote or to
direct the vote and to dispose or to direct the disposition of 600 Shares held
in the Edward H. McDermott Individual Retirement Account, which is a
self-directed individual retirement account. EHM also has the sole power to vote
or to direct the vote and to dispose or to direct the disposition of 3,234
Shares.

         (c) On August 8, 2012, the Reporting Persons sold an aggregate of
2,100,000 Shares at a price of $34.03 per Share. On August 9, 2012, the
Reporting Persons sold an aggregate of 1,000,000 Shares at a price of $33.15
per Share.

         Except as set forth in this paragraph (c), to the best of the
knowledge of each of the Reporting Persons, none of the persons named in
response to paragraph (a) has effected any transactions in Shares during the
past 60 days.



                                                             Page 16 of 18 pages

         (d) Each of the Reporting Persons affirms that no person other than
such Reporting Person has the right to receive or the power to direct the
receipt of distributions with respect to, or the proceeds from the sale of,
Shares owned by such Reporting Person.

         (e) Not applicable.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR
         RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.

         Item 6 is hereby amended and restated in its entirety as follows:

         Effective as of May 25, 2011, EHM is no longer a member of the Board
of Directors of the Issuer.

         Otherwise, except as set forth herein, there are no contracts,
arrangements, understandings or relationships of the type required to be
disclosed in response to Item 6 of Schedule 13D of the Act with respect to the
Shares owned by the Reporting Persons.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

         Item 7 is hereby amended and restated in its entirety as follows:

Exhibit A:        Agreement pursuant to Rule 13d-1 (k)



                                                             Page 17 of 18 pages


                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.



Dated August 10, 2012                          By:      /s/ Kim M. Silva
                                               --------------------------------
                                                   Kim M. Silva

                                           Attorney-in-Fact for:

                                           SPO PARTNERS II, L.P.(1)
                                           SPO ADVISORY PARTNERS, L.P.(1)
                                           SAN FRANCISCO PARTNERS, L.P.(1)
                                           SF ADVISORY PARTNERS, L.P.(1)
                                           SPO ADVISORY CORP.(1)
                                           JOHN H. SCULLY(1)
                                           PHOEBE SNOW FOUNDATION, INC.(1)
                                           ELI J. WEINBERG(1)
                                           IAN R. MCGUIRE(1)
                                           EDWARD H. MCDERMOTT(1)


                                           (1) A Power of Attorney
                                           authorizing Kim M. Silva to
                                           act on behalf of this
                                           person or entity has been
                                           previously filed with the
                                           Securities and Exchange
                                           Commission.





                                                             Page 18 of 18 pages

                                  EXHIBIT INDEX

EXHIBIT    DOCUMENT DESCRIPTION
-------    --------------------
A          Agreement Pursuant to Rule 13d-1 (k)