Eurasian curlew populations have collapsed in upland Britain, with nest failure from predation and habitat loss causing welfare harms at individual and population scale.
Curlew breeding failures caused by predation represent welfare harms to dependent chicks and energy-investing adults. Adult curlews defending nests against predators experience intense stress responses. The collapse of breeding populations means individual curlews investing energy in long-distance migration arrive at degraded breeding grounds and fail to produce offspring.