UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                            Washington, DC 20549


                                SCHEDULE 13G


                  (Under the Securities Exchange Act of 1934
                            (Amendment No.18)*

                           Berry Petroleum Company
                               (Name of Issuer)

                              Class A Common Stock
                          (Title of Class of Securities)

                                    085789105
                                 (CUSIP Number)

                               DECEMBER 31, 2005

         Date of Event Which Requires Filing of This Statement

Check the following box if a fee is being paid with this
statement __.  (A fee is not required only if the filing person:
(1) has a previous statement on file reporting beneficial
ownership of more than five percent of the class of securities
described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of
such class.) (See Rule 13d-7).

*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 the disclosures provided
in a prior cover page.

The information required in 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 4 pages






CUSIP No.  085789105                 Page 2 of 4
  Pages

1.      NAME OF REPORTING PERSON
       S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          Winberta Holdings, Ltd.


2.      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *

         Not Applicable                         (a)
                                                (b)


3.      SEC USE ONLY




4.      CITIZENSHIP OR PLACE OF ORGANIZATION

            Alberta, Canada


   NUMBER OF        5.      SOLE VOTING POWER
    SHARES                     1,885,950
 BENEFICIALLY       6.      SHARED VOTING POWER
   OWNED AT                    Not Applicable
DECEMBER 31, 2005
   BY EACH          7.      SOLE DISPOSITIVE POWER
   REPORTING                   1,885,950
  PERSON WITH       8.      SHARED DISPOSITIVE POWER
                               Not Applicable

9.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
            1,885,950

10.     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES *
            Not Applicable

11.     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
            8.6

12.     TYPE OF REPORTING PERSON *
            CO-Corporation







                      *SEE INSTRUCTION BEFORE FILLING OUT!



                             Page 2 of 4 pages




Item 1(a).    Name of Issuer:
               Berry Petroleum Company

Item 1(b).    Address of Issuer's Principal Executive Offices:
                  5201 Truxtun Avenue, Suite 300
                  Bakersfield, CA  93309

Item 2(a).        Name of Person Filing:
                  Winifred Berry Lowell

Item 2(b).    Address of Principal Business Office or, if none,
residence:
                  5201 Truxtun Avenue, Suite 300
                  Bakersfield, CA  93309

Item 2(c).    Citizenship:
                  Canada

Item 2(d).    Title of Class of Securities:
                  Class A Common Stock

Item 2(e).    CUSIP Number:
                  085789105

Item 3.    If this statement is filed pursuant to Rules 13d-1(b),
            or 13d-2(b), check whether the person filing is a:
                  Not Applicable.

Item 4.    Ownership:
            (a)   Amount Beneficially Owned:
                  1,885,950 shares

            (b)   Percent of Class:
                   8.6%




                              Page 3 of 4 pages



      (c)   Number of shares as to which such person has:

      (  i) Sole power to vote or direct the vote            1,885,950
      ( ii) Shared power to vote or direct the vote                  -
      (iii) Sole power to dispose or direct the
                    disposition of                           1,885,950
      ( iv) Shared power to dispose or direct the
                    disposition of                                   -

Item 5.     Ownership of Five Percent or Less of a Class:
                  Not Applicable

Item 6.     Ownership of More than Five Percent on Behalf of Another
Person:
              Pursuant to the terms of the Last Will and Testament of
              C.J. Berry, 37.5% of the dividends declared on 1,763,866
              shares owned by Winberta Holdings, Ltd. are payable to
              C.J. Bennett during his lifetime.

Item 7.     Identification and Classification of the Subsidiary
Which Acquired the Security Being Reported on By the Parent Holding
Company:
                  Not Applicable

Item 8.     Identification and Classification of Members of the
Group
                  Not Applicable

Item 9.       Notice of Dissolution of Group:
                  Not Applicable

Item 10.      Certification:
                  Not Applicable



                                     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.


                                 February 3, 2006
                                       Date





                                 /s/ Kenneth A. Olson
                                 Attorney-in-Fact for
                                 Winifred Berry Lowell




                                  Page 4 of 4 pages