One of South America’s least known and most threatened seabirds—frequently tangled in fishing nets and now facing warming waters and deadly flu—is in accelerating collapse, but ...

A new analysis reveals that songbirds across the world mix and match the same whistles, trills, and other acoustic motifs to create their diverse tunes.

Las aves nos están diciendo—con su comportamiento, con su número cada vez menor, con su silencio—que debemos actuar ya, y que tenemos que actuar donde las aves más nos necesitan, desde el Ártico hasta ...

With their intense, feline gaze, barred bodies, and fierce hunting skills, the Great Horned Owl has been called the “tiger of ...

Fact-checked by Kenn Kaufman, field editor, Audubon magazine. Spotting a red bird in the wild can be both a delight and a surprise—I didn't know we had birds that looked like that! In fact, North ...

If you’ve ever witnessed a Pileated Woodpecker chiseling away at a tree trunk, you might have wondered if all that wood pecking was taking a toll on the tree. Pileated nest holes, after all, can ...

There's a lot to look forward to in spring for birders. The flowers are blooming, old friends are returning, and birdsong is at its peak. The sheer volume of songs and calls can often feel ...

Until the 20th century, the Colorado River moved freely through the West, from forested Rocky Mountain headwaters through canyons, deserts, and lush wetlands and then out to sea. But by 1922, as ...

A spectacularly marked, sociable, noisy waterfowl. The Black-bellied Whistling-Duck often rests on low snags above water, and may perch high in dead trees. In North America found mostly near Mexican ...

Often shown in documentaries about the Galapagos, where pairs bow and shuffle and show off their blue feet, the Blue-footed Booby also nests as far north as western Mexico. In some years, small ...

The American Kestrel is the smallest falcon in North America, as well as the most familiar and widespread. In open country it is commonly seen perched on roadside wires, or hovering low over a field ...

This dark, long-bodied diving bird floats low in the water with its thin neck and bill raised; perches upright near water with wings half-spread to dry. The Double-Crested Cormorant (which rarely ...