A new study shows that when free-ranging cats are more than a few blocks from forested areas in cities, such as parks, they’re more likely to prey on rats than on native wildlife.

We compared 4,500 species of songbird to finally confirm what Darwin suspected.

These coordinated movements of a flock of starlings follow no plan or leader. Scientists used to think the animals must communicate via ESP to create these fast-moving blobs.

Birds will shriek and dive at each other over food, territory or mates, but only a small number of species sport actual weapons. The reason: Flying matters more for their survival than fighting.

Birds will shriek and dive at each other over food, territory or mates, but only a small number of species sport actual weapons. The reason: Flying matters more for their survival than fighting.

There are no more ivory-billed woodpeckers or Bachman’s Warblers on Earth, but they’ve left an echo behind.

These wetland birds were eradicated in the 1600s, but breeding pairs returned in 1979.

How did penguins end up with so few bones – and become lightning-fast swimmers?

Homes for bees and birds are going to be built into new houses to help support struggling species.

Forests around the world will need to shift their ranges to adapt to climate change. But many trees and plants rely on animals to spread their seeds widely, and those partners are declining.