Cuckoo Welfare and Population Decline

The cuckoo has declined dramatically in the UK, with tracking research revealing the welfare challenges it faces on its remarkable migratory journey.

Key Facts

UK cuckoo numbers fell by 65% between 1982 and 2019
Satellite tracking revealed cuckoos migrate via two routes to sub-Saharan Africa
Mortality during migration is highest in the Mediterranean region, likely from hunting and habitat loss
Cuckoos rely on migrant insects as prey, making them vulnerable to climate-driven phenology shifts
Reed warbler and other host species availability affects cuckoo breeding success in the UK

Welfare Considerations

Individual cuckoos undertaking their 5,000km annual migration face physical challenges including exhaustion, food shortage, and hunting pressure. Satellite-tagged cuckoos have died during Mediterranean crossing events, revealing specific high-mortality locations. The welfare dimension of migratory bird mortality is significant — birds that die during migration may suffer from exhaustion, starvation, or traumatic injuries from hunting. Protecting key stopover sites and reducing hunting pressure directly benefits individual cuckoo welfare during migration.

What You Can Do

Support organisations tracking cuckoo migration and identifying high-mortality locations
Advocate for hunting moratoriums in Mediterranean countries during migration periods
Donate to cuckoo conservation research and habitat protection projects
Create farmland habitat supporting insects and host species for cuckoo breeding