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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 6)*


                              KESTREL ENERGY, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                           Common Stock, No Par Value
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   492545 10 8
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                    S. Lee Terry, Jr., Davis Graham & Stubbs
                     LLP, 1550 17th Street, #500 Denver, CO
                              80202 (303) 892-7400
--------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)


                                  March 1, 2005
--------------------------------------------------------------------------------
             (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 ss.ss.  240.13d-1(e),
      240.13d-1(f) or 240.13d-1(g), check the following box. |_|

      Note:  Schedules  filed  in  paper  format  shall  include  a signed
      original and five copies of this  schedule,  including all exhibits.
      See ss. 240.13d-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).

            Persons who  respond to the  collection  of  information
            contained  in this  form  are not  required  to  respond
            unless the form  displays a currently  valid OMB control
            number.

SEC 1746 (11-03)


Schedule 13D/A
CUSIP No. 492545 10 8                                       Kestrel Energy, Inc.
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
1     NAMES OF REPORTING PERSONS
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

      Samson Oil & Gas N.L.
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

                                                                         (a) |_|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     SOURCE OF FUNDS (See Instructions)

      OT
--------------------------------------------------------------------------------
5     CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
      ITEMS 2(d) or 2(e)
                                                                             |_|
--------------------------------------------------------------------------------
6     CITIZENSHIP OR PLACE OF ORGANIZATION

      Australia
--------------------------------------------------------------------------------
                           7     SOLE VOTING POWER

       NUMBER OF                 8,179,977
        SHARES             -----------------------------------------------------
      BENEFICIALLY         8     SHARED VOTING POWER
       OWNED BY
         EACH                    0
       REPORTING           -----------------------------------------------------
        PERSON             9     SOLE DISPOSITIVE POWER
         WITH
                                 8,179,977
                           -----------------------------------------------------
                           10    SHARED DISPOSITIVE POWER

                                 0
--------------------------------------------------------------------------------
11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

      8,179,977
--------------------------------------------------------------------------------
12    CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
      (See Instructions)
                                                                             |_|
--------------------------------------------------------------------------------
13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

      76.7%
--------------------------------------------------------------------------------
14    TYPE OF REPORTING PERSON (See Instructions)

      CO
--------------------------------------------------------------------------------


                                       2


Schedule 13D/A
CUSIP No. 492545 10 8                                       Kestrel Energy, Inc.
--------------------------------------------------------------------------------

Item 1.     Security and Issuer.

            No Par Value Common Stock (the  "Shares")  of Kestrel  Energy,  Inc.
(the "Company"), 1720 Cole Boulevard, Suite 210, Lakewood, Colorado 80401.

Item 2.     Identity and Background.

      (a)   Name.  Samson Oil & Gas N.L.,  formerly known as Samson  Exploration
            N.L.

      (b)   Business address. Level 36, Exchange Plaza, 2 The Esplanade,  Perth,
            Western Australia 6000

      (c)   An investment corporation registered in Australia

      (d)   None

      (e)   None

DIRECTORS AND OFFICERS OF REPORTING PERSON:

      (a)   Name. Malcolm Alec Burne, Company Director

      (b)   Business address.  Leigh Cottage, 3 Claremont Drive, Claremont Park,
            Esher, Surrey, United Kingdom KT10 9LU

      (c)   Managing  Director for Golden Prospect Plc, a publicly traded United
            Kingdom mining investment company, 1st Floor, 143-149 Great Portland
            Street, London, England W1N 5FB

      (d)   None

      (e)   None

      (f)   British

--------------------------------------------------------------------------------

      (a)   Name. Neil Thacker MacLachlan, Company Director

      (b)   Business address. 42A Lennox Gardens, London, England SW1X 0DH

      (c)   Consultant,  Markham Associates, an investment and advisory company,
            same business address as above.

      (d)   None

      (e)   None


                                       3


Schedule 13D/A
CUSIP No. 492545 10 8                                       Kestrel Energy, Inc.
--------------------------------------------------------------------------------

      (f)   British

--------------------------------------------------------------------------------

      (a)   Name. David Thornwald Cairns, Company Director

      (b)   Business  address.  4th Floor,  Griffin  Centre,  28 The  Esplanade,
            Perth, Western Australia 6000

      (c)   Geologist for Resolute Limited, same business address as above

      (d)   None

      (e)   None

      (f)   British

--------------------------------------------------------------------------------

      (a)   Name. Terry Barr, Company Director

      (b)   Business address. 1726 Cole Boulevard, Suite 210, Lakewood, Colorado
            80401

      (c)   Managing Director for Samson, same business address as above

      (d)   None

      (e)   None

      (f)   Australian

--------------------------------------------------------------------------------

      (a)   Name. Denis Ivan Rakich, Company Director and Secretary

      (b)   Business  address.  36th Floor,  Exchange  Plaza,  2 The  Esplanade,
            Perth, Western Australia 6000

      (c)   Director of Elstree Nominees Pty Ltd, same business address as above

      (d)   None

      (e)   None

      (f)   Australian

Item 3.     Source and Amount of Funds or Other Consideration.

            Between  March 1, 2005 and April 27,  2005,  Samson  Oil & Gas N.L.,
formerly Samson  Exploration  N.L.  ("Samson"),  acquired  1,873,302  additional
shares of common stock (the "Shares),  resulting in Samson  beneficially  owning
8,179,977  Shares,  or 76.7% of the outstanding  common stock. As reported in an
earlier  amendment to this Schedule 13D, Samson may now be deemed to control the
Company.  Samson  acquired the Shares by exchanging  shares of its own stock for
shares of the  Company's  common stock.  All  exchanges  were made with non-U.S.
holders of the  Company's  common  stock Two prior  affiliates  of the  Company,
Golden Prospect Plc and Victoria International  Petroleum N.L., hold a 22.4% and
13.2% interest,  respectively, in Samson. Neither Golden or Victoria have voting
or dispositive power under Section 13(d)(1) over the shares held by Samson.


                                       4


Schedule 13D/A
CUSIP No. 492545 10 8                                       Kestrel Energy, Inc.
--------------------------------------------------------------------------------

            One of the  Company's  directors,  Neil  T.  MacLachlan,  is  also a
director of Samson. Three of the Company's other directors, Robert J. Pett, John
T.  Kopcheff and Timothy L. Hoops,  are  directors of Victoria.  The Company has
been  informed  by Samson that there are no plans to change or  restructure  the
board of directors of the Company.

Item 4.     Purpose of Transaction.

            Samson is expected to purchase  additional  Shares if offers made to
certain non-U.S. holders of the Company's Shares are accepted.

Item 5.     Interest in Securities of the Issuer.

      (a)   8,179,977 Shares of Common Stock (76.7%) beneficially owned.

      (b)   Number of Shares as which  there is Sole  Power to Vote -  8,179,977
            Shared  Power to  Direct  the  Vote - 0 Sole  Power  to  Direct  the
            Disposition - 8,179,977  Shared Power to Direct to the Disposition -
            0

      (c)   See Item 3

      (d)   None

      (e)   Not applicable

Item 6.     Contracts,   Arrangements,   Understandings  or  Relationships  with
            Respect to Securities of the Issuer.

            None

Item 7.     Material to Be Filed as Exhibits.

            None


                                       5


Schedule 13D/A
CUSIP No. 492545 10 8                                       Kestrel Energy, Inc.
--------------------------------------------------------------------------------

                                    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.

                                       May 24, 2005
                                       -----------------------------------------
                                       Date

                                       SAMSON OIL & GAS N.L.


                                       /s/ Denis I. Rakich
                                       -----------------------------------------
                                       Signature

                                       Denis I. Rakich, Secretary
                                       -----------------------------------------
                                       Name/Title


                                       6