British and Irish gardens fuel a novel reverse migration for Blackcaps in winter
The allure of garden feeders has transformed the biology of a bird that visits Britain and Ireland for the winter. New research involving the British Trust for Ornithology (BTO), Oxford University and the Max Planck Institute, and just published in the journal Global Change Biology, provides further evidence of how humans are shaping the natural world through simple changes in our own back gardens. Increasingly mild winters and abundant garden bird food has led Blackcaps to establish new migratory routes, lead more sedentary winter lives, and perhaps even modify their anatomy.