Birds

This green honeycreeper has male plumage on one half of its body and female plumage on the other half.

Over the past six years, Danish photographer Søren Solkær has followed huge flocks of starlings, known as murmurations, across Europe to film and photograph their breathtaking aerial acrobatics.

The penguins accrue 11 hours of cumulative sleep a day from a bizarre adaptation that enables them to doze as they guard their nests.

First of its kind footage captured for National Geographic's "Incredible Animal Journeys" shows a barn swallow caught in a sandstorm as part of its migration through the Sahara Desert.

Fossilized bird tracks discovered in Australia show these ancient creatures lived in the southern polar regions on the supercontinent of Gondwana.

The British Antarctic Survey detected cases of highly pathogenic bird flu in seabirds on Bird Island, located in the Antarctic region in the South Atlantic.

By analyzing how birds migrated across the U.S. over a 23-year period, researchers have shown that solar weather events can seriously disrupt the navigation of the wandering avians.

The winner of the Bird Photographer of the Year was Jack Zhi, who caught the moment a peregrine falcon took on a large brown pelican.

Animals have sex in all sorts of weird and wonderful ways. Birds have sex via an internal chamber called a cloaca that is present on both male and female animals.

Out of five known emperor penguin colonies in the Bellingshausen Sea region of western Antarctica, four have failed to breed this year as chicks likely drowned in the melting sea ice.