The northern wheatear undertakes one of the longest migrations of any small passerine, travelling from sub-Saharan Africa to the high Arctic, and its welfare spans ecosystems across half the globe.
Wheatear welfare is affected by conditions on three continents. Drought in the Sahel reduces wintering food availability. Habitat loss on UK upland breeding grounds removes nest sites and foraging territory. Heavy rainfall during early spring migration causes chilling and starvation of newly arrived males. The Greenland subspecies faces ocean crossing mortality events during severe Atlantic weather systems.