Michael Webster

New research on the glittering white-necked jacobin hummingbird reveals nearly 20% of the species’ adult females have male-like plumage. Why? To dodge bullies and get better access to food, according to new Cornell research.

The Linda R. and William E. Macaulay Library at the Lab of Ornithology, named after Bill and wife Linda, is the premier archive of media from the natural world, with more than 15 million photos, sound recordings and videos of wildlife, including...