Wild bird populations are declining globally due to habitat loss, pesticides, cats, and collisions, with welfare implications for billions of individuals affected by these human-caused threats.
Wild bird welfare is intertwined with population conservation at a scale that dwarfs most other wildlife welfare concerns. Individual birds suffering from starvation, pesticide poisoning, and collision injuries experience genuine suffering, but the population-level declines represent an even greater aggregate welfare impact. Human-caused mortality from cats, window collisions, and vehicle strikes is largely preventable at the household level. Systemic causes including pesticide regulation, habitat protection, and sustainable agriculture reform require policy action.