Hunting of migratory birds raises welfare concerns beyond population management, including wounding rates, lead poisoning from shot, and the cumulative stress of hunting pressure on migrating birds.
Hunting causes both direct suffering and indirect welfare impacts. Wounded birds that escape die slowly from their injuries over hours to days. Lead ingestion from spent shot contaminates wetland environments and poisons waterfowl and raptors that ingest shot or contaminated prey. The high mortality and wounding rates in Mediterranean spring hunting intercept birds that have already completed a long migration, inflicting maximal welfare costs on animals in depleted condition. Hunting pressure also causes chronic stress responses in wild bird populations.