Scientists find in a review of 44 studies that birds that roam farther show more uneven lead exposure, with ground-foraging species appearing most affected

Migratory birds face higher lead toxicity than stationary ones, a new study reveals. Researchers found that birds with larger home ranges, especially ground foragers, experience more variable lead exposure. This groundbreaking analysis, published in Ecotoxicology, suggests animal behaviour is key to understanding pollution impacts and could reshape how we assess environmental risks to wildlife.