When we think about birds and nesting, we automatically think spring. But recently photographing a ruby-throated hummingbird nest made me think, no, not all birds are nesting right away in spring.

observed the birds’ behavior in 2014 in Amsterdam, where she lives. “The poor warbler almost disappears in the wide-opened mouth of its ‘adopted’ baby,” Slothouber says. And yet “the ...

Ornithologist Carla Dove explains how the microscopic structure of a bird's feather can help identify the species ... Viral King Penguin Molts His Baby Feathers (01:06) National Treasure: The ...