BATS WITHOUT BORDERS
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Cullen
(she/her)

Board of Trustees
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Cullen Geiselman

Cullen Geiselman, PhD is a conservationist, philanthropist, and bat researcher. She lives and works in Houston, Texas, USA where she chairs the board and is the acting director of the Cullen Trust for Health Care, a support organization funding healthcare initiatives in the greater Houston area. In addition to Bats without Borders, she also serves on the Board of Directors of the Houston Zoo, the Houston Arboretum and Nature Center, the Houston Parks Board, the Houston Advanced Research Center, the Turtle Conservancy, the Greater Houston Community Foundation, and the Lone Star Coastal Alliance. She is dedicated to conserving species and the habitats they need to thrive and to preserving and expanding green space for the benefit of people and nature.

Cullen is the immediate past chair of the Board of Directors of Bat Conservation International. After working for Bat Conservation International and completing her dissertation on nectar-feeding bats in French Guiana, she continues her work with bats by collaborating with students in Africa and Latin America, curating the online Bat Eco-Interactions database, and presenting lectures about bats to technical audiences and the general public. Cullen received a BA in Environmental Science and Policy from Duke University and masters and PhD in Ecology and Evolutionary Biology from Columbia University.
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Bats without Borders is a registered Scottish Charitable Incorporated Organisation (charity number SC044185) | ​© 2013-2025 Bats without Borders
  • Why bats
    • Bats and ecosystems
    • Threats to bats
    • Bats of southern Africa
  • About us
    • Our story
    • Our strategy
    • Our colony
    • Our Partners and Sponsors
    • Jobs / Volunteer
  • Our work
    • Applied research
    • Capacity strengthening >
      • Early Career Training
      • Bat Group Training
    • Conservation action >
      • Fruit bat monitoring in Malawi
      • Copperbelt Bats Project
    • Engagement and education
    • Events & Training >
      • Webinars
      • Past events
  • Our impact
  • GET INVOLVED
    • Business partnership opportunities
    • Fundraise for Bats
    • Kids Zone >
      • Classroom without Walls
    • Shop