The common crane has returned to breed in the UK after 400 years of absence, with ongoing welfare monitoring during the reintroduction process.
Reintroduction carries inherent welfare costs: captive rearing in isolation, transport stress, and release into unfamiliar habitats. Crane chicks reared in costumes to avoid human imprinting experience unusual early environments. Post-release, birds must learn migration routes with limited guidance, facing collision risks and predation. Long-term monitoring shows survival rates are improving as the population establishes.