Migratory birds face a gauntlet of threats along their flyways including habitat loss, hunting, collision, and climate change. Protecting entire flyways is essential for migrant welfare.
Migratory birds experience welfare harms distributed across their entire range. Building glass collisions cause traumatic injury and death. Illegal shooting during migration causes acute suffering and leaves wounded birds that die slowly. Exhausted migrants at stopover sites face starvation if wetlands and forests have been converted. Cats kill hundreds of millions of migratory birds annually at stopover points. Climate change is desynchronizing migration timing with prey availability, causing energetic deficits. Each of these threats is addressable through specific interventions -- bird-safe building design, illegal hunting enforcement, habitat protection, and cat management significantly reduce migratory bird suffering.