This feeling was only sharpened by news of a Pale-legged Leaf Warbler having been found and belatedly identified further ...

The bird started swaying from side to side, which cannot be seen in a still photo, but what you can see is the fully-deployed feathers known as “undertail coverts.” A white-breasted nuthatch has black ...

The California Department of Fish and Wildlife is conducting its annual art contest to select the design for the state’s 2024 ...

A covert feather or tectrix on a bird is one of a set of feathers, called coverts (or tectrices), which cover other feathers. The coverts help to smooth airflow over the wings and tail. Topside of a ...

Four cases in Washington farmworkers are the latest in a drumbeat of human infections across the U.S. as the virus continues ...

Changing precipitation patterns in the Neotropics, one of Earth's most biodiverse regions, could threaten two-thirds of the ...

Several cases of the bird flu in humans have been reported in California's Central Valley in 2024. This Q&A explores how the ...

Cows in California are dying at much higher rates from bird flu than in other affected states, industry and veterinary ...

It was thought that birds gained an energy advantage by escaping cold winters, but new research has quashed that assumption.

Some birds migrate thousands of miles every autumn. How exactly do they manage it? Scientists built a flight chamber to find out. Some birds migrate thousands of miles every autumn. How exactly do ...