Wildlife

Cat Predation on Wild Birds: Scale and Mitigation

Domestic and feral cats kill billions of wild birds annually, with welfare implications for both populations.

Key Facts

Domestic cats in the UK kill an estimated 55 million birds annually
Feral cats kill an estimated 1.3-4 billion birds annually in the US
Bell collars reduce hunting success by approximately 50% in controlled studies
High bird mortality from cats is concentrated among fledglings in June-July

Welfare Considerations

Birds killed by cats die through injury and stress rather than instantaneous death. Caught birds that escape often die from internal hemorrhage or shock. The welfare cost extends to the survivors of predation events, which show prolonged stress responses. The aggregate welfare impact across billions of birds is enormous, making responsible cat management one of the highest-impact individual wildlife welfare contributions available.

What You Can Do

Fit outdoor cats with quick-release bell collar to reduce hunting success
Keep cats indoors at peak bird activity times of dawn and dusk
Protect nesting sites by keeping cats away during June-July fledgling season
Support TNR programs for feral cats that address the larger share of bird mortality