Discover more about the egg-laying monotremes of Oceania and the ancient traits they still carry.

Does a cuckoo know it's a cuckoo? The answer is more difficult than you might think, explains Richard Pallardy ...

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

Kākāpō ( Strigops habroptilus) are large, flightless, nocturnal parrots with mottled green and yellow plumage that only breed ...

Monotremes are unique mammals that lay eggs, but their limited geographic ranges make them vulnerable. We explain why.