Protecting the world's only flying mammals from emerging threats
Bats represent approximately 20% of all mammal species — over 1,400 species worldwide. They are keystone species providing insect pest control, pollination, and seed dispersal services valued at billions of dollars annually. Bat welfare is under severe pressure from White-Nose Syndrome, wind turbine mortality, habitat loss, persecution, and climate change. As mammals with complex social lives, long lifespans, and strong maternal bonds, bats deserve serious welfare consideration.
White-Nose Syndrome (WNS), caused by the fungus Pseudogymnoascus destructans, causes devastating welfare harm: bats arouse repeatedly from hibernation (energy-consuming and causing starvation), wings develop lesions, and death occurs from dehydration, starvation, and immune collapse. The welfare suffering of individual bats in WNS-affected colonies — waking, suffering physiological distress, and dying in their millions — represents an enormous welfare catastrophe that has received insufficient attention.
Wind turbines kill an estimated 800,000-1,000,000 bats annually in the USA alone. Hoary bats and other migratory species are most affected. Death mechanism includes direct blade strike and barotrauma from pressure change near blades. Mitigation measures: feathering turbine blades during low-wind high-bat-activity nights (reduces mortality 40-90% with minimal energy production loss); ultrasonic deterrent systems; radar-activated shutdown during migration events.
Bat rehabilitation requires specialized knowledge — many common bat pathogens can infect humans, requiring appropriate PPE. Bat Conservation International and national bat conservation organizations provide training for wildlife rehabilitators. Key welfare considerations: bats in care require specialized insect diets, appropriate temperature gradients, and species-appropriate social housing. Release timing must align with insect availability and appropriate temperatures.