The curlew is the UK's most threatened wading bird, with breeding populations declining catastrophically from upland and lowland habitats.
Individual curlew welfare is affected by nest predation causing acute loss of a breeding attempt after weeks of incubation, chick predation, and food shortage in degraded habitats. Adults returning to breeding territories after a 5,000km migration to find unsuitable conditions experience breeding failure affecting fitness and survival. Conservation management providing predator management, habitat restoration, and supplementary feeding at key sites directly benefits individual curlew welfare by enabling breeding success. Head-starting (releasing captive-reared chicks) is a last-resort tool for critically small populations.