The Invisible Mammal

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Available until

Jun 01, 2026

Available in

Australia, Austria, Belgium, Brazil, Canada, Colombia, Costa Rica, Croatia, Czech Republic, Denmark, Dominican Republic, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Mexico, Netherlands, New Zealand, Norway, Portugal, Puerto Rico, South Korea, Spain, Sweden, United Kingdom, United States of America, Switzerland

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About the film

Genre

Environment

Runtime

1h 29m

Released

2025

Director

Kristin Tiéche

Producer

Matthew Podolsky

Executive Producer

Eileen Kim, Holly Mosher, Windy Borman

Crew

Heidi Zimmerman

Upcoming screenings

Awards & recognition

DocLands Documentary Film Festival

Audience Choice Award

International Wildlife Film Festival

Official Selection

Capital City Film Festival

Official Selection

What people are saying

Certainly, it will be hard to look at these “rats with wings” as budding Nosferatus ever again after watching a scientist bottle-feed an orphan. Prepare to be ahh-ed.

Pam Grady

San Francisco Chronicle

[Director Kristin Tiéche's] journey looking into bats, their struggle to survive and the people who work to help them led her to make “The Invisible Mammal,” the award-winning filmmaker’s first feature documentary. The film, which highlights a team of female biologists and their work to save bats from white-nose syndrome, will make its world premiere at DocLands at noon Saturday at the Smith Rafael Film Center in San Rafael.

Colleen Bidwill

Marin Independent Journal

“The Invisible Mammal” follows three women scientists, University of California (UC), Santa Cruz researcher/chief scientist of Bat Conservation International Dr. Winifred Frick, founder of NorCal Bats Corky Quirk of UC Davis and Dr. Alice Chung-MacCoubrey of the National Park Service, as they strive to protect North American bats against the deadly disease. Frick and her research team discovered a way to help bats combat WNS. The project is called Operation Fat Bat (OFB). The innovative solution is to use light to lure the bats out of the caves, allowing them to feast on insects before winter hibernation.

Noma Faingold

Richmond Review/Sunset Beacon

Bats don't have the best reputation. Many people find them scary and COVID didn't help. But those who really know about bats, understand how much they mean to the environment and our health. Unfortunately, some of our fury, flying friends are facing a disease that is pushing them to extinction, especially Little Brown Bats. What happens to bats affects us humans. Luckily, there are scientists trying to keep bats around. Filmmaker Kristin Tièche follows a group of female scientists working to save bats in her documentary "The Invisible Mammal." It's part of the lineup at the Doclands Film Festival this Saturday May 3 at the Smith Rafael Film Center in San Rafael.

Jeneé Darden

KALM Public Media