California hummingbird beaks transformed by feeders: ‘more tapered and longer’
Study details evolutionary change of Anna’s hummingbirds and finds ranges have expanded to follow such devicesWhich came first: the feeder or the bird?A seemingly straightforward question, but the answer might not be so simple. According to a recently published study in Global Change Biology, the use of human-made hummingbird feeders has changed the beak sizes and shapes of Anna’s hummingbirds, and spread their range from a narrow pocket of California all the way up the coast to British Columbia. Continue reading...
Study details evolutionary change of Anna’s hummingbirds and finds ranges have expanded to follow such devices
Which came first: the feeder or the bird?
A seemingly straightforward question, but the answer might not be so simple. According to a recently published study in Global Change Biology, the use of human-made hummingbird feeders has changed the beak sizes and shapes of Anna’s hummingbirds, and spread their range from a narrow pocket of California all the way up the coast to British Columbia. Continue reading...
