The discovery has cemented Archaeopteryx as a transitional form between non-avian dinosaurs and birds.
A gargantuan species of ostrich-like elephant bird from Madagascar was thought to the largest that ever lived.
The elephant bird, along with some of Madagascar's other megafauna, went extinct around 1,000 years ago.
A fish with a head resembling that of a bird has been caught in a river in China's Guizhou Province.
According to a new study, only a few select bird species survived the asteroid strike that wiped out the dinosaurs.
For the first time ever, it has been possible to directly observe one species evolving in to another.
Sightings of a particularly unusual type of moth are becoming increasingly common across the British Isles.
A prehistoric species of bird that preened itself like a flamingo has been discovered in Germany.
Researchers have finally worked out why some bird eggs are rounder while others are more pointy.
The incredibly well-preserved hatchling is believed to date back 99 million years to the Cretaceous Era.
Students in Ireland have ended up under siege by a particularly violent attacker of the avian variety.
A newly discovered species of seagull-like bird lived at a time when the Arctic was as warm as Florida.
Environmental officials have been left perplexed after dozens of grackles appeared to fall ill en masse.
Ducks and other birds may possess far greater cognitive abilities than anyone had ever realized.
A recent reverse evolution experiment has succeeded in growing a dinosaur's limb on a farmyard bird.
A huge flightless bird called Gastornis is thought to have once roamed what is now the Arctic Circle.
Falcons and kites in Australia have been starting bush fires in an effort to smoke out small animals.
New evidence suggests that Genyornis newtoni was wiped out because it was tasty and easy to catch.
Like modern birds, dinosaurs were no strangers to putting on a show to attract the opposite sex.
Scientists have been struggling to explain why some UK garden birds are drowning themselves en masse.