The slaty-masked tinamou, found in Brazil, is utterly unafraid of people. That could be its undoing, ornithologists worry.

This bird is totally crazy-looking, and it is an opera singer,” says a biologist from Colombia and an expert on Neotropical ...

The dodo is usually depicted as a slow, dim-witted, goofy-looking bird, a total evolutionary loser. But what if, for all these centuries, the dodo bird has just been misunderstood?

This top-down effect is technically known as a trophic cascade – a “domino effect throughout the ecological community,” as Pacific Wild puts it. As wolves hunt animals in the rung of the food chain ...