Curlews are one of Britain's most urgently threatened breeding birds, with welfare science beginning to reveal the stress responses of these sensitive birds to human and predator disturbance.
Curlew welfare science is beginning to reveal the depth of stress responses these highly sensitive birds experience during the breeding season. Curlews are particularly vulnerable to disturbance because they nest in open habitats where early detection of threats is essential for survival - but this same vigilance means they are easily displaced from nesting areas by human activity, dogs, and other disturbance. Research using heart rate telemetry has shown that curlews show prolonged elevated heart rates even after apparently minor disturbance events, indicating sustained physiological stress. Adults displaced from nests by disturbance may fail to return if disturbance is repeated, resulting in nest abandonment. Chick welfare in the immediate post-hatch period is particularly precarious: curlew chicks are precocial but require extended parental protection against predators and weather. Conservation volunteers guarding curlew nests 24 hours a day during the incubation period provide direct welfare benefit by deterring predators without disturbing the sitting adult. The long-term welfare of individual curlews is inseparable from population recovery - a species declining toward functional extinction is a species in cumulative, irreversible welfare crisis.