Kākāpō parrots in New Zealand begin breeding again after a four-year pause, with rimu trees triggering a rare and important season ...

Security cameras at a private residence in the state of São Paulo captured an unusual encounter between technology and local ...

In truth, it is not a paradox. The animals involved all seem perfectly eager participants in heterosexual behaviour, as well, so their reproduction is not compromised. It is, though, a puzzle—for ...

Biologists tend to look at the animal kingdom and try to categorize things in an organized fashion. But nature has a way of ...

The behaviour was more common in species that lived in harsh environments with limited access to food. Read more at ...

Bonds between same-sex individuals help apes and monkeys to manage conflict and strengthen alliances, especially in dry ...