Yellowhammers are declining farmland songbirds whose welfare depends on cereal weed seeds in winter stubbles and insect prey for chick rearing in summer.
Yellowhammers wintering in intensively managed arable landscapes face nutritional stress when natural seed sources are eliminated by autumn cultivation and herbicide use. Chick-rearing adults need abundant invertebrates that pesticide regimes reduce. The combined effect of reduced winter food and reduced summer invertebrate prey creates year-round welfare pressure that has driven population collapse. Simple management interventions including overwintered stubbles provide direct, measurable welfare benefits to individual birds.