Reed buntings breed in reedbeds and wetland margins but have increasingly colonised drier habitats, with welfare linked to invertebrate food and seed availability.
Reed bunting welfare in winter depends heavily on seed food availability in a landscape where weed seeds have been eliminated by herbicide use. The expansion into farmland habitats reflects habitat loss pressure rather than preference - farmland reed buntings have lower productivity than wetland breeders. Restoring wetland breeding habitat and maintaining winter seed food reduces welfare stress throughout the annual cycle.