One of South America’s least known and most threatened seabirds—frequently tangled in fishing nets and now facing warming ...

Raptors are on the move. Now is a great time to get out and see the birds of prey as they migrate south for the winter (click here for a list of 10 awesome places to watch the spectacle). Seeing the ...

It’s hard to imagine what a mourning bird would look like. But forced to guess, I would say the footage of two female Emperor Penguins huddled around a lifeless chick in BBC’s series “Penguins-Spy in ...

The white-cheeked geese of North America were long considered to make up just one highly variable species, Canada Goose. It was not until 2004 that four of the smallest forms were formally recognized ...

Until the 1970s, the Boat-tailed Grackle was considered to be the same species as the Great-tailed Grackle, but the two forms overlap on the coasts of Texas and Louisiana without interbreeding. The ...

Few birds have been associated with humans so closely as the Rock Pigeon, better known as the common city pigeon. It has been domesticated and taken around the world, raised for food, trained for ...

Brought in from Europe as an ornamental addition to parks and estates, the Mute Swan has become naturalized in some parts of North America, mainly in the northeast. Not really 'mute'; its voice is ...

Extensive freshwater marshes are the favored haunts of this large, stout, solitary heron. It is seldom seen as it slips through the reeds, but the odd pumping or booming song of the American Bittern ...

Far above timberline in mountains of the west lives this elusive little ptarmigan, the smallest member of the grouse family in North America. While the other ptarmigan are strictly northern, the White ...

In dry foothills and canyons in the interior of the Southwest, the Canyon Towhee is common in the low brush. They spend most of their time on or near the ground, often scratching in the soil with both ...

Susan Willson has a killer cat. “He's basically a professional killer,” Willson says. “I was trying to find something that worked because I was so appalled at him bringing me two birds a week.” ...