Yellowhammers have declined dramatically on UK farmland and their welfare depends on maintaining winter stubbles, hedgerows, and mixed farming landscapes.
Yellowhammer welfare in winter is critically dependent on food supply. Loss of overwinter stubbles following the shift to autumn sowing removed one of the most important food sources. Individual birds in landscapes with no stubble face chronic food shortage through January to March, the hardest winter period. Supplementary feeding on farms under agri-environment schemes directly reduces starvation risk. Breeding season welfare depends on insect availability in field margins and hedgerow structure for nest sites.