The feet of a bird tell us a lot about its life. Newly described, the fossil feet of the ancestors of modern birds reveal how superbly adapted they were to their world.
Breeding pairs spend a great deal of time roosting together and the male often gently strokes the female with his beak.
One avian track, probably made by a large gull or a small goose, was found in sediments that have been dated to about 400,000 years. That makes it the oldest avian track reported from southern Africa.
Kea were able to correctly guess the most probable scenarios, by evaluating various physical and social cues. Previously, only great apes and humans were known to be able to understand probability.