Whistling as they fly, Black-bellied Whistling-Ducks are gorgeous waterfowl with bright pink bills and legs, chestnut necks and backs, and black underparts. Though most whistling-ducks live in the tropics, Black-bellied Whistling-Ducks are found in the U.S. along the western Gulf Coast and…

Great Horned Owls excel at nocturnal hunting, thanks to their acute senses and stealth — but their feet let them secure squirming prey. The outermost of their four toes can rotate forward or backward, an advantage that most other birds of prey lack, letting them capture animals as large as…

There are fifteen species of cranes across the globe, found everywhere but Antarctica and South America. During the winter, cranes forage and rest together by the thousands. Listen in to the voices of cranes from all over the world. Nothing evokes the spirit of the wild like the voices of…

Found in much of Central America, White-throated Magpie-Jay flocks are family groups led by a dominant female. They include a mate and several female offspring that bring food to the primary female and her young. It’s an example of cooperative breeding, when birds other than the parents…

Las aves poseen una anatomía respiratoria sumamente eficiente que impulsa el esfuerzo del vuelo. Esto se debe a grandes sacos de aire de paredes delgadas distribuidos por toda la cavidad corporal, que funcionan como los fuelles en un acordeón. Este sistema parabronquial para extraer…

You’ve probably heard the old saying: “A bird in the hand is worth two in the bush.” Well, it’s a very old saying, and it’s gone through some changes over the years. In each era, the pragmatic wisdom is clear: Hold on to the sure thing rather than taking a gamble on something better. The…

In February, winter still holds sway over much of North America. But in Argentina, it’s summer, and birds are in full voice. Argentina’s national bird, the Rufous Hornero, belts out a rapid trill while the Rufous-bellied Thrush sings its lovely song. In the tropical forests of northeastern…

Birds have a highly efficient breathing anatomy that powers the exertion of flight. It is driven by large, thin-walled air sacs located throughout the body cavity that operate like bellows. This parabronchial system for extracting oxygen from the air has a far greater surface area than the…

Black Rails are marsh-inhabiting birds, more often heard than seen. Many Black Rails nest in marshes along the Atlantic seaboard and in the Midwest. But in winter they concentrate in the coastal marshes of East Texas, Louisiana, and Florida, areas that face many threats. Sadly, according…

In parts of the United States, House Finches overlap with similar-looking Purple Finches. Their distinct songs help us sort them out. House Finch songs are jumbled and have a sharp, buzzy note — especially during the breeding season. Purple Finches’ songs, on the other hand, are smoother…