The yellowhammer, once a common sight on farmland hedgerows, has declined by over 50% in the UK since the 1970s. Its bright plumage and distinctive song make its absence from the landscape deeply felt.
Yellowhammers are ground-nesting birds particularly vulnerable to the changes in farming practice since the 1960s. The replacement of spring-sown cereals with autumn-sown varieties reduced the availability of winter stubbles - an essential winter food source. Hedgerow removal eliminated nesting habitat. Herbicide use removed the broad-leaved plants whose seeds sustained wintering flocks. Birds in areas without adequate winter food must spend more energy searching for resources, accumulating less fat for cold weather survival. Ground nests are vulnerable to agricultural machinery, particularly during silage cutting. The combination of reduced food, nesting sites and increased disturbance creates conditions where breeding success is chronically suppressed.