Billions of wild birds are killed each year by human-made structures and practices. This page examines the scale and what individuals and policy can do.
Wild bird welfare is affected by a vast array of human-caused mortality and habitat degradation. Window strikes cause acute death or injury with significant suffering for birds that survive impact. Cat predation, while often rapid, causes stress and injury in many cases. Birds that are injured but survive window strikes or cat encounters frequently die slowly from internal injuries or secondary infection. The scale of human-caused bird mortality is enormous: tens of billions of birds are killed by human structures and practices every year globally. Individual actions to reduce window strikes and cat predation are genuinely impactful at the household level.