The welfare and conservation challenges facing Britain's smallest bird of prey — the merlin.
Merlin welfare is significantly threatened by illegal persecution on and around driven grouse moors. Despite full legal protection, merlins are shot, trapped, and their nests disturbed in some parts of their range. The small size of the British population means each illegally killed bird represents a significant population impact.
Breeding welfare is affected by habitat quality and prey availability. Merlins require heather moorland for nesting cover and areas of mixed short and long heather that support the meadow pipit and skylark populations they depend on as prey. Over-grazing, burning management, and agricultural improvement all reduce habitat quality. Poor small bird prey years translate directly to reduced chick survival rates.
Winter welfare challenges involve migration — some merlins move to lowland coasts while others remain on upland moors. Coastal merlins must adapt their hunting to different prey species and environments. The small body size makes merlins vulnerable to cold weather starvation when prey is scarce.