
We are an educational and charitable organization located in the heart of the spectacular Sonoran Desert.
Our Mission
The Ajo Natural History Association (ANHA) is a nonprofit organization dedicated to fostering understanding and appreciation of the Sonoran Desert’s natural wonders.

What We Do

Host Naturalist-Led Walks
Our walks are always free and open to members, visitors, and locals to explore the desert’s unique landscapes and learn from local experts.

Our Lecture Series
(December–March), featuring experts on desert ecology, botany, wildlife, astronomy, conservation, and more.

Support the Tri-National Sonoran Symposium
ANHA is a partner in the a Tri-national Sonoran Symposium celebrating the Sonoran Desert and advancing desert research.

Curate Nature Photo Exhibits
ANHA coordinates an annual photo show show casing the Sonoran Desert. The show is open to the public.
Whether you’re attending a stargazing lecture, hiking with our naturalists, or sharing photography at the annual photo show, you’re helping preserve the Sonoran Desert for future generations.


Membership
Why should I join the Cabeza Prieta Natural History Association?
If you enjoy any or all aspects of the desert and want to learn more about them, that is reason enough. However, if you feel like you would want to contribute to ongoing and future activities and projects by being a participant and or volunteer, that is all the more reason.
Activities and Projects In Need of Volunteers and Participants
- Lecture series: Setting up the lecture series requires someone to contact potential speakers and confirm their subject and date. Volunteers are needed to help move chairs and tables and bring visual materials, if needed, to the meeting place. Members can help by suggesting topics and assisting with publicizing.
- Bookstore at the Saturday Mercado: The ANHA has established a bookstore which offers materials of an educational and interpretative nature related to the Sonoran Desert. Member volunteers involved in all phases of the operation of the store are needed. Members themselves are encouraged to create materials as fits their individual talents.
- Audubon Christmas Bird Count: Most of the participants in the two area Christmas Bird Counts (Ajo/Cabeza Prieta and Sierra Pinta) are Association Members. Members assist each other and non-member participants with techniques and bird identification.
- Members may assist Refuge personnel with setting up and conducting the bird counts.
- Volunteer to take a sector in either the greater Ajo area bird count or the count at Organ Pipe Cactus National Monument.
- Sonoran Desert Photo Show: the Photo Show is an annual event sponsored by the Association in which anyone can enter a photograph, or photos, of a variety of subjects matter relating to the Sonoran Desert, including topics like “Desert Plants,” “Desert Animals,” etc. The Show usually goes up in early March and remains up for the month of March, at the atrium of the Art Under the Arches Gallery in the Ajo Plaza. Entry forms with all the rules are usually available at the Copper News Bookstore; the Ajo Chamber of Commerce, or at Art Under the Arches Gallery. Dust off your best desert photos and enter the Photo Show!
- The Bi-annual Desert Symposium: Help at a variety of tasks at the International Desert Symposium.
- Field Trip and Desert Walks Program: the Association is in the process of establishing a regular annual program of field trips and desert walks, led by outside experts or by knowledgeable members, with walks in the desert that focus on the natural history of the Sonoran Desert, it all its myriad and interrelated forms.
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Membership in The Association Is Open to Everyone
Membership Dues: Annual Individual: $15. Annual Family: $25. Lifetime Individual: $80 or $150.00 Family
For help with membership questions: info@ajonaturalhistoryassociation.com
We are working on an online membership link, but in the meantime you can pay for annual memberships at our Bookstore at the Saturday Mercado or our membership meetings and lectures or mail in the form to
Ajo Natural History Association
PO Box 234
Ajo, AZ 85321
You can download the membership form below.
Board

Vikki Jackson, President
I am the definition of “Nature Nerd”. My greatest joy is being outside watching, discovering, learning from nature. I have retired from nearly 30 years as professional ecologist. I now get immense fulfillment in helping others learn about the natural world. The ANHA is a wonderful opportunity to help others learn about the magic and importance of the Sonoran Desert ecology and meet amazing individuals.

Vacant- Vice-president

Paul Johnson, Secretary
I got involved with the Association my first winter in Ajo (2013-14). I was inspired by this organization’s emphasis on desert conservation through public education. I learned a lot from great leaders we had then, folks like Hank Jorgenson, John Cooper, Ralph Hudson, Betty Pope, and Bruce Davis, who were running numerous educational programs each winter about the biology, botany, ecology and geology of the Sonoran Desert around Ajo. It has been gratifying, as we come into our 30th year, to see that legacy carried forward so enthusiastically by the current board and membership.

Rosemary Rowe, Treasurer
I grew up in North Carolina where I developed a love of birds, playing in the woods, and exploring coastal environments. I met my husband Ed at the University of Georgia where we shared a mutual passion for hiking. After moving to Montana, I pursued my professional career as an environmental scientist in state and federal government while enjoying backpacking, skiing, and river running. Upon retirement, we decided to explore new ecosystems, working as volunteers for the National Park Service and Oregon State Parks. We call the Sonoran Desert home now.

Tom Cope, At-Large Board Member
I became involved with the ANHA soon after moving to Ajo. I was looking to become involved in an organization that explored and learned about the Sonoran Desert. The organization is a great place to experience the desert with other people concerned about the protection and education of this unique desert. I enjoy volunteering at the bookstore, helping with hikes and being involved in planning the Sonoran Desert Conference.

Bill Parry, At-Large Board Member
As an admirer and defender of Nature and all her species, working with the Ajo Natural History Association is very satisfying and gives me a sense of purpose. Having traveled the planet, I’m assured that our Sonoran Desert is unique in many ways and must be protected.

Sharon Carrol, At-Large Board Member
Board History
Members
2023-2025
- President – Vikki Jackson, Term Ends: 12/31/2026
- Vice President – Arron Mayson, Term Ends: 12/31/2025
- Secretary – Paul Johnson, Term Ends: 12/31/2025
- Treasurer – Rosemary Rowe, Term Ends: 12/31/2025
- Board Member at Large – Sharon Carrol, Term Ends: 12/31/2027
- Board Member at Large – Tom Cope, Term Ends: 12/31/2025
- Board Member at Large – Bill Parry, Term Ends: 12/31/2026
2022
- President – Paul Johnson (president@cabezaprieta.org), Term Ends: 12/31/2022
- Vice President – Tom Cope (vpresident@cabezaprieta.org), Term Ends: 12/31/2022
- Secretary – Bill Perry (secretary@cabezaprieta.org), Term Ends: 12/31/2022
- Treasurer – Linda Robbins (treasurer@cabezaprieta.org), Term Ends: 12/31/2022
- Board Member at Large – Aaron Mayson, Term Ends: 12/31/2022
- Board Member at Large – Jan Muir, Term Ends: 12/31/2023
- Board Member at Large – Vikki Jackson, Term Ends: 12/31/2024
2021
- President – Paul Johnson (president@cabezaprieta.org)
- Vice President – Tom Cope (vpresident@cabezaprieta.org)
- Secretary – Bill Perry (secretary@cabezaprieta.org)
- Treasurer – Linda Robbins (treasurer@cabezaprieta.org)
- Member at large through 2020 – Linda Mulherin
- Member at large through 2021 – Hank Jorgensen – CPNHA Naturalist
- Member at large through 2022 – Aaron Mayson
2020
- President – Linda Robbins (president@cabezaprieta.org)
- Vice President – Tom Cope (vpresident@cabezaprieta.org)
- Secretary – Paul Johnson (secretary@cabezaprieta.org)
- Treasurer – Jan St. Peters (treasurer@cabezaprieta.org)
- Member at large through 2023 – Jan Muir
- Member at large through 2022 – Aaron Mayson
- Member at large through 2021 – Hank Jorgensen – CPNHA Naturalist
2019
- President – Linda Robbins (president@cabezaprieta.org)
- Vice President – Ralph Hudson (vpresident@cabezaprieta.org)
- Secretary – Paul Johnson (secretary@cabezaprieta.org)
- Treasurer – Aaron Mayson (treasurer@cabezaprieta.org)
- Member at large through 2019 – Jan St. Peters
- Member at large through 2020 – Linda Mulherin
- Member at large through 2021 – Hank Jorgensen – CPNHA Naturalist
Bylaws
Bylaws of the
Cabeza Prieta Natural History Association
Adopted March 4, 2004, revised February 6, 2007, revised March 4, 2008, revised December 1, 2010, February 26, 2015, and March 13, 2025.
Article I: Name
The name of this organization shall be Ajo NATURAL HISTORY ASSOCIATION, herein called the Association.
Article II: Purpose
Purpose: This organization is organized exclusively for charitable and educational purposes within the meaning of section 501(c)(3) of the Internal Revenue Code.
Character of Affairs: The promotion of educational and interpretive activities intended to enhance understanding and appreciation of the natural history of the Sonoran Desert in southwestern Arizona and to raise concern for the preservation of this unique natural environment.
Article III: Members
- The membership shall be open, upon payment of dues, to any person interested in furthering the goals of the Association as stated in the Articles of Incorporation. Until Changed by the Executive Board, membership categories of the Association shall be: active, patron and honorary.
- Classes of Membership
- Active: Active Members are those persons who have paid annual dues as prescribed by Article VI and are called upon to perform voluntary services to the Association as set forth in the Standing Rules. As such they have all the rights of membership.
- Individual: Individual members are those who elect to join singly for a year by paying the annual dues.
- Family: Family memberships include the persons living at one address as a family unit who elect to join as a group. All persons of the family membership unit have the rights of Individual Membership.
- Life: Life members are those who elect to join by choosing a one-time dues payment that grants membership without expiration for the term of their lives.
- Student: Youths enrolled in elementary, high school, or college who elect to join and do not pay dues. Student members are not entitled to make motions, vote, or hold office but will be called upon to perform voluntary services to the Association as set forth in the Standing Rules.
- Patron: Patron Members are those who wish to support the Association by making a substantial monetary contribution as prescribed by Article IV, without further obigation.
- Honorary: The Executive Board may at any time extend the privilege of Honorary Membership to a person deemed worthy of recognition because of contribution to the Association. Honorary Members are not entitled to make motions, vote, or hold office.
- Active: Active Members are those persons who have paid annual dues as prescribed by Article VI and are called upon to perform voluntary services to the Association as set forth in the Standing Rules. As such they have all the rights of membership.
- Admission to Membership. Members are accepted without regard to color, national origin, religious affiliation, race, citizenship, sex, age or other non-merit factors.
Article IV: Officers, Directors at Large and the
Executive Board
The Executive Board is defined as duly elected Officers and three (3) Directors at Large. The following sets forth the policies for elections, terms of the Officers and the Directors and their duties.
Officers:
1. Officers. The officers of the Association shall consist of the President, Vice-President, Secretary and Treasurer. One Officer, except the President, may hold any two offices. All Officers shall be Directors and members of the Executive Board.
2. Nominations, Elections and Terms. There shall be a nominating Committee appointed by the Executive Board who shall nominate a slate of officers. Only those who have consented to serve if elected shall be nominated. This slate will be presented as the first order to business at the December general meeting. Nominations from the floor will be accepted. An election will be held at that time and officers will assume their duties.
Officers shall serve for a term of one (1) year and/or until the election of their successors. No person shall serve as a specific Officer for more than three (3) consecutive years, but may serve again after one (1) year setting aside from that specific office. Nothing precludes this same person from serving as a different Officer or Director at Large.
3. Duties of Officers. These Officers shall perform the duties prescribed by these By-laws and by the parliamentary authority adopted by the Association.
- The President shall:
- Be the executive officer of the Association.
- Preside at Meetings of the Association and the Executive Board.
- Appoint the Chairpersons of all Committees, except the Nominating Committee, with approval of the Executive Board.
- Be an ex-officio member of all committees, except the Nominating Committee.
- With the approval of the Executive Board, create Committees not provided for and assign their duties.
- The Vice-President shall:
- Assist the President.
- Assume the duties of the President in his/her absence.
- The Secretary shall:
- Keep the minutes of the meetings of the Association and the Executive Board.
- Conduct the correspondence of the Association.
- Maintain the Association’s records and files.
- The Treasurer shall:
- Be custodian of the funds of the Association.
- Be authorized to receive moneys from donations, membership dues, sales of publications, and other available items that may be handled by the Association.
- Make payments as directed by the Association and the Executive Board.
- Give a financial status report at Board meetings and membership meetings.
- Supervise the keeping of the Association’s financial books and records.
Directors at Large:
1. Directors: There shall be three (3) Directors at Large.
Selection and Term: Each Director at Large shall be elected for a term of three years or until a successor shall be elected to fulfill the term. The same Nominating Committee as set forth above shall nominate a Director(s). They wilt present name(s) to the Executive Board at the first Executive Board meeting in December and the Executive Board shall elect a Director or Directors at Large.
Director at Large positions shall be for a term of three (3) years. Only one of the three positions shall expire each December; persons selected to fill a vacancy that occurs within a three (3) term shall serve out the term of the position. Consequently, the terms of the position of Director at Large shall be staggered to promote continuity within the Executive Board.
The Executive Board shall fill any vacancy in the Executive Board.
Duties of the Executive Board:
- Duties. The Executive Board shall:
- Require its members to be present to vote at an Executive Board meeting.
- Be vested with the general management of the affairs of the Association.
- Conduct any other such business as may be referred to it by the Association.
- Approve any Committee chairperson appointed by the President.
- Fix the hour and place of meetings.
- Fill any vacancies in office as they occur.
- Meetings. The Executive Board shall meet monthly November through April at the request of the President.
- Quorum. A majority of the executive Board constitutes a quorum.
- Meeting Notice. Notice of the time and place of any meeting of the Executive Board shall be given at least three (3) days previous thereto.
Article V: Meetings
- The Association shall conduct its meetings and carry out its activities in a manner that provides all members the opportunity to participate fully and meaningfully in discussion and decisions. It shall strive to reach consensus among members and to respect dissenting and minority opinions when consensus is not possible.
- Meetings shall be as designated by the Executive Board.
- Special meetings may be called by the Directors or by a written request of a majority of the members of the Association. The purpose of the meeting shall be stated in the notice. No business at such meetings except that provided for in the notice shall be conducted.
- Quorum. A majority of members at the meetings shall constitute a quorum.
- The current edition of Robert’s Rules of Order-Revised, shall govern the Association in all cases to which they are applicable and in which they are not inconsistent with these By-laws and any special rules or order the Association may adopt.
Article VI: Dues Assessments
- Amount. The annual dues for all membership shall be set by the Executive Board.
- Payment. Annual dues shall be payable on December 1.
Article VII: Amendment of Bylaws
These Bylaws may be amended at any meeting of the Association by a two-thirds (2/3) vote, provided that the amendment has been submitted at least twenty-eight (28) days prior to the meeting.
Article VIII: Administrative Procedures
The Executive Board may establish Standing Rules as Administrative Procedures in accordance with Article V.
Article IX: Finances
- The fiscal year of the Association shall be from October 1 to September 30.
- Membership Profits and Assets. All Property owned, all income received in the future or property retained by the Association shall be used to further the purpose of the Association. No member shall share in the proceeds of the Association.
- Expenditures. No expenditures of one hundred dollars ($100.00) or more shall be authorized by the Officers without the approval of the Executive Board, except in payment of bills incurred in the conduct of the normal business of the association; such business having been approved previously by the Executive Board.
- Checks. All checks issued by the Association shall be signed by the Treasurer.
- Funds. All Association money shall be deposited in a financial institution approved by the Executive Board. No funds of the Association shall be deposited in any name except that of the Association, and the Treasurer shall not invest any Association funds without prior approval of the Executive Board. All sums, all bank accounts, all investments and all business conducted shall be balanced and audited each year, and may be audited at the conclusion of the Treasurer’s term.
Article X: Offices
The principal office of the Association for the transaction of its business is located in Pima County, Arizona.
Adopted
Henry Jorgensen, President Gayle Weyers, Secretary
4 March 2004
Revised: 2/6/2007
Lee Renz, President
June Beck, Secretary
Revised: 3/4/2008
Lee Renz, President
Lance Bell, Vice President
Regina Browne, Treasurer
John Cooper, Secretary
Revised: 12/1/2010
Ralph Hudson, President
John Cooper, Vice President
Lee Renz, Treasurer
Lauralee Bell, Secretary
Revised 3/13/25
Vikki Jackson, President
Aaron Mayson, Vice President
Rosemary Rowe, Treasurer
Paul Johnson, Secretary
Revised: 2/26/2015
Aaron Mayson, President
John Cooper, Vice President
Linda Mulherin, Treasurer
Betty Pope, Secretary
Our Story
Founded in 1995 in Ajo, Arizona, ANHA began as Cabeza Prieta Natural History Association. We began by staffing a bookstore and providing guided tours to Childs Mountain during National Wildlife Week. Over 30 years, we’ve grown into a hub for desert education, uniting scientists, adventurers, and curious minds to protect this irreplaceable ecosystem. This past year we changed our name to Ajo Natural History Association to reduced confusion with the Cabeza Prieta Wildlife Refuge.
