While experts previously estimated the number of Earth’s insect species at 6 million, scientists say a new analysis shows ...

Something is causing tree swallows across North America to shrink, and scientists tracking nearly 50 years of data just pinpointed the culprit. The answer points to a quiet crisis unfolding in ...

Insects may be far more numerous than anyone thought. A new study estimates that Earth holds 14 million to 20 million insect species, far above the long-standing estimate of about 6 million. It ...

Many birds survive the night by burning through their reserves. We’re doing something similar. Here’s how to stop living on ...

Perched on a small branch with an insect firmly in its beak, this tiny songbird demonstrates the remarkable speed and ...

Cowbirds also closely follow livestock and catch insects disturbed by the large animals’ movements and feed upon seeds that ...

Here are examples of nests in which they raise their young. Barn and cliff swallows build cup-shaped nests of mud under eaves, rafters, and bridges. Tree and violet-green swallows occupy tree-hole ...

Perched quietly on a weathered branch deep within their natural habitat, these brilliantly colored birds offered a rare ...