Songbird Decline in North America: A Continental Welfare and Conservation Emergency

North America has lost nearly 3 billion birds since 1970. Understanding the causes and welfare dimensions of this decline is essential for effective action at individual and policy levels.

Key Facts

North America has lost approximately 29% of its bird population since 1970 — nearly 3 billion individuals
Grassland birds have declined the most severely, with some species losing over 70% of their populations
Cats kill an estimated 1.3 to 4 billion birds annually in the US — the leading human-caused bird mortality
Window strikes kill an estimated 600 million birds per year in the US alone
Pesticide-induced prey collapse is linked to insectivore decline across agricultural landscapes
Light pollution causes disorientation and collision mortality in migratory species at night

Welfare Considerations

The scale of bird suffering implied by a 3 billion individual decline is almost incomprehensible. Each death from window strike, cat predation, or pesticide poisoning involves distress and often prolonged suffering before death. Chronic nutritional stress in declining insectivore populations means reduced welfare for surviving birds throughout their lives. The causes of this decline are well understood and many are addressable at the individual level through cat management, window treatments, and pesticide reduction. Policy-level action on agricultural pesticide reform and light pollution standards can address the largest mortality sources.

What You Can Do

Apply window collision deterrents to large glass surfaces in your home and workplace
Keep cats indoors or in enclosed outdoor runs to eliminate bird predation
Reduce or eliminate pesticide use in gardens to protect insect prey for birds
Turn off unnecessary lights at night during migration seasons
Support agricultural policy reform to reduce neonicotinoid and other pesticide use on farmland