A new study finds North American bird populations keep dropping, and that decline is speeding up for many species.

Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the ...

‘Extremely adaptable’ bird species are declining at an alarming rate – with worrying implications for humans. View on ...

University of Michigan study finds noise harms birds' health in many ways, including their ability to reproduce ...

A landmark finding that suggests koala genetic diversity not the only deciding factor in successful regrowth of populations.