About Us
About BCI

Meet the Staff

To contact a staff member, please use our Global Contact Form. You can choose the relevant Department to send your message.


Andrew Walker


Executive Director

Andrew Walker joined Bat Conservation International (BCI) in 2013, as Executive Director after 23 years with The Nature Conservancy Read more...

Andrew Walker, M. A.
Executive Director

Andrew Walker joined Bat Conservation International (BCI) in 2013, as Executive Director after 23 years with The Nature Conservancy where he held a variety of leadership posts in New York, Arizona, and elsewhere, working with partner organizations throughout the United States, Latin America, the Caribbean and Asia-Pacific. Andy is also the former president and CEO of the New College Foundation in Florida and the Tennessee Environmental Endowment and a founding board member of the Cumberland River Compact.

Earlier in his career, he served with the U.S. Department of Agriculture’s Agricultural Research and Foreign Agricultural services and was an on-site consultant with the U.S. Department of Energy. A member of Phi Beta Kappa, he holds a master’s degree in international communications and agricultural technology transfer and undergraduate degrees in physics and English literature.

Dave Waldien, Ph.D.

Senior Director, Global Conservation

Dave has worked with bats and other wildlife for nearly 20 years, focusing extensively on finding a balance between conservation opportunities and management issues. Read more...

Dave Waldien, Ph.D.
Director of Global Programs

Dave Waldien joined Bat Conservation International (BCI) in 2004 to lead BCI’s efforts in Mexico. Since then, he has supervised BCI’s international conservation programs and those operating throughout the United States, including the Bats and Mines, Western Subterranean, Indiana Myotis and Water for Wildlife programs. In February 2013, Dave returned to oversee the strategic growth of BCI’s programming in Latin America, Africa and Asia-Pacific after completing his second term as BCI’s Interim Executive Director and currently serves as the Director of Global Programs.

Dave has worked with bats and other wildlife for over 20 years, focusing extensively on finding a balance between conservation opportunities and management issues. He received a B.S. in Biology from Southern Oregon University, an M.S. in Forest Science and a Ph.D. in Wildlife Ecology from Oregon State University. Dave serves as a trustee of Philippine Bat Conservation and is a member of the steering committee for the North American Pollinator Protection Campaign and the Southeast Asia Bat Conservation and Research Unit.  

Joy Gaddy

Senior Director, Operations

Joy Gaddy joined Bat Conservation International in December of 2013 after a career working for The Nature Conservancy Read more...

Joy Gaddy joined Bat Conservation International in December of 2013 after a career working for The Nature Conservancy, NatureServe and Conservation International. Immediately prior to joining BCI, she worked for Conservation International, a large nonprofit with staff in 27 countries, where she was responsible for the human resources, technology, and administrative functions for more than ten years. In this role she worked on global issues and was able to travel extensively to CI’s programs in Asia, South America and Africa. Before that, she worked for The Nature Conservancy in various operational roles for 23 years. Her last service to The Nature Conservancy was to help spin off and create, NatureServe, a nonprofit dedicated to connecting science with conservation, where she worked as the Director of Operations for 3 years. 

Joy has an undergraduate degree from Hood College in Maryland and a master’s in Applied Management from Lesley University in Massachusetts.

Mylea Bayless, M.S.

Senior Director, US/Canada Conservation

Mylea Bayless leads BCI’s U.S./Canada conservation team with over 20 years of experience in conservation Read more...
Mylea Bayless leads BCI’s U.S./Canada conservation team with over 20 years of experience in conservation, research and wildlife management. Her team is responsible for bat research and conservation in the region including (but not limited to) the following programs: BCI’s Public Lands Program, Wind Energy Program, Imperiled Species Program, WNS Response, Outreach and Education (U.S. only), Subterranean Program (U.S. only), and Bracken Bat Cave Preserve. She serves on several conservation teams including the steering committee for the North American Bat Conservation alliance and on the team developing a protocol for monitoring North American bats. 
Although her background is varied, bats have been intertwined throughout her career. As the daughter of a National Park Service biologist, Bayless volunteered as a young adult on bat surveys even before graduating from high school. She continued working with bats intermittently through every stage of her career beginning in college as a summer intern with the U.S. Geological Survey and assisting others on a variety of research projects in nearly every professional position she has held. 
By the time Bayless joined BCI in 2006, she had worked for a variety of organizations including the Arizona Game and Fish Department, Humboldt State University, University of Minnesota, Colorado State University, Colorado Division of Wildlife, and the U.S. Forest Service. He background is as varied as the organizations where she worked where she has led research teams working on a variety of wildlife (including spotted owls, bald eagles, American pronghorn, Merriam’s turkeys, and Rocky Mountain elk). She holds a bachelors and masters of science from Colorado State University.

Sue Sirkus

Senior Director, Philanthropy

  • Principal fundraising officer
  • Strategic planning and organizational capacity building
  • A community leader and creative advocate for bat conservation
  • Join me, our staff & board in making a difference for people, nature & communities!

Sue Sirkus joined the BCI staff in December, 2103 as the Director of Philanthropy. She is a member the organization’s management team, and directs the fundraising, membership, and social media programs. Having built her career in the non-profit sector, Sue has become a leader and advocate for conservation in the areas of philanthropy, strategic planning, organizational capacity building and training.

A graduate of Syracuse University, Sue earned a Master of Fine Arts degree from Claremont Graduate School. She has been a Certified Fund Raising Executive since 1996. Currently, Sue serves on the board of directors for Western National Parks Association, and on the board of governors for the Santa Lucia Conservancy.

Conservation, Education, & Science

Cris Hein, Ph.D.

Director, Wind Energy Program

  • Bats and Wind Energy Cooperative (BWEC) Research Coordination
  • Forest Management
  • Acoustic Monitoring

Katie Gillies, M.S.

Director, Imperiled Species Program

  • White-nose Syndrome
  • Endangered, Threatened & Sensitive Species
  • Habitat Management
  • Population Genetics

Dan Taylor, M.S.

Director, Public Lands Program

  • Bats and Public Lands Management
  • Bats and Forests
  • Bats and Water Resources

Chris Woodruff, M.A.

Global Conservation Program Manager

  • International partnerships, contracts, and agreements
  • Fundraising for international projects

Dianne Odegard

Education & Public Outreach Manager

  • Public Information
  • Artificial Roosts
  • Education
  • Public Health
  • Bats in Buildings
  • Workshop Coordination

Fran Hutchins

Director, Bracken Cave Preserve

  • Bracken Bat Cave Habitat Restoration
  • Bracken Cave Educational Tours and Bat Flight Events
  • Texas Master Naturalist

Jason Corbett, M.S.

Director, Subterranean Program

  • Mine and Cave Inventory and Management
  • Cave and Mine Gates

Shawn Thomas

Subterranean Program Manager

  • U.S. & Canada cave/mine bat assessments

Michael Schirmacher, M.S.

Wind Energy Program Manager

  • Wind Energy
  • Bats and Wind Energy Cooperative (BWEC) field project management
  • Acoustic Monitoring

Rebecca Patterson

US/Canada Program Coordinator

  • Conservation Program Administration
  • Grant and Contract Management
  • Bats and Wind Energy Cooperative (BWEC) administrator


John "Beej" Nunn

Director, Information Technology

  • Information Systems
  • Webmaster & Web Development
  • Network Administrator & Systems Support
  • Flys & jumps out of perfectly good airplanes

Melanie Flores

Administrative Associate

  • Receptionist
  • Mailing/Shipping
  • General Administration
  • Photo Sales & Requests for BCI Images

Tristan Pierce

Finance & Accounting Manager

  • Finances
  • Accounting
  • Reporting

Kay Morris

Accounting Associate

  • Accounts Payable
  • Administrative and Finance support

Trish Badeen

GIS & Database Developer

  • GIS Development
  • Systems Support
  • Database Analyst


Amy McCartney

Membership Manager

  • Membership Administrator
  • Membership Assistant Supervisor

Jessica Cochran


Grants & Contracts Coordinator

  • Grants & Contracts Support
  • Reporting & Paperwork Coordination
  • EarthShare Campaign Administration

Chris Daniels

Major Gifts Associate

  • Major Gifts Coordinator

Amy Price

Director, Grants & Contracts

  • Private and Federal Grants

Joy Rivera

Membership Associate

  • Adopt-A-Bat & Membership Processing
  • Membership Customer Service

BCI relies on the support of our amazing members around the world.

Our mission is to conserve the world’s bats and their ecosystems to ensure a healthy planet.

Please join us or donate so our work can continue.