Skylarks that remain in the UK through winter face severe food shortages on modern arable farmland, with grain availability and stubble field management directly affecting individual survival.
Overwinter skylark welfare depends on seed and invertebrate availability that modern agriculture has dramatically reduced. Birds that cannot find sufficient food in cold weather lose condition rapidly, becoming vulnerable to predation and cold stress. The loss of winter stubbles through autumn cultivation removes food resources at the time when natural seeds are most depleted. Simple management changes - retaining stubble through winter, leaving unharvested headlands, and providing supplementary grain - directly improve individual bird welfare across the hundreds of thousands of skylarks overwintering in the UK.