Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

Recovering humpback whale populations are revealing a hidden shift: older males are increasingly outcompeting younger rivals to father calves.

Wolves and dogs don’t normally breed in the wild, largely because wolves are so territorial. But an exception has been found.

WELLINGTON, New Zealand (AP) — The world’s only flightless parrot species was once thought to be doomed by design. The kakapo ...

World’s only flightless parrot could be saved from extinction after unusual mating boom - New Zealand conservationists have ...