Wildlife

Cuckoo Welfare and Population Decline in the UK

What satellite tagging tells us about cuckoo welfare across their migratory range.

Key Facts

UK cuckoo populations have declined by over 65% since the mid-1990s
They parasitise reed warblers, meadow pipits, and dunnocks as hosts
Satellite tagging reveals two migration routes — eastern birds fare better than western
Wetland and grassland management improves habitat for cuckoo host species

Welfare Considerations

Cuckoo welfare encompasses the full migratory cycle — from UK breeding habitat quality to African wintering grounds and migration route conditions. Declining host species abundance means fewer successful parasitisms. Welfare-informed conservation supports habitat for host species, monitors migration routes for bottlenecks, and investigates mortality factors on both flyways.

What You Can Do

Support cuckoo satellite tracking research through BTO donations
Improve breeding habitat for cuckoo host species — meadow pipits, reed warblers, dunnocks
Contribute to wetland and grassland restoration that benefits the whole ecological community