You might think that the neotropics are one big mating party, but even in places that stay green and vibrant year-round, ...

One of the rarest birds in New Zealand is having its best breeding season in decades, potentially doubling the population. The orange-fronted parakeet, known locally as the kākāriki karaka, is in the ...

What really did come first--the chicken or the egg? Birds' reproductive biology is dramatically different from that of any other living vertebrates, and ornithologists and paleontologists have long ...

After its fourth season of field work, volunteers with the Wisconsin Breeding Bird Atlas II have documented 225 species of breeding birds in the Badger State, including 13 species not found in the ...