Most wrens in North America are small, furtive birds that stay deep in the vegetation. But the Cactus Wren is large, bold, and brassy. These wrens are well adapted to the desert and can get all the moisture they need from their food. Cactus Wren nests are a regular sight in their range of…

For some birds, love is in the air. When a pair of White-throated Swifts wants to get to know each other, they meet up — on the wing — high above the ground. The birds grasp one another and, clinging together, tumble downward, for over 500 feet. Just before striking the earth, they…

Crane Hawks of Central and South America and African Harrier-Hawks both have legs that bend forward and backward. Each bird’s wonderfully peculiar leg adaptation is completely original - it evolved all on its own - even though the end result is the same. Scientists call this convergent…

Birds at a suet feeder... What a burst of vitality on a chilly morning! What's the attraction? A cake of suet, suspended from a branch in a small wire feeder. Suet is beef fat, a high-energy food critical for birds' survival in the colder months. Suet is an especially strong magnet for…

It’s winter in North America — a good time to head for the subtropical realms of South Florida and listen to the region’s birds, such as the secretive Mangrove Cuckoo pictured here. Rarely seen, it sings sporadically in winter. When it does, you’re sure to take notice. A sweeter voice…

When a Carolina Wren like this one sings, something remarkable happens. These birds can sing so loudly that you almost have to shout to be heard over their songs! How can a bird like a Carolina Wren – at just 5½ inches long and weighing only as much as four nickels – produce so much sound…

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…

Do vultures detect carrion by sight or by smell? The lightbulb moment came to ornithologist Kenneth Stager when a Union Oil employee told him of vultures congregating at the spots along pipelines where gas leaks were occurring. Why would they do that? Because a key ingredient in the odor…

It’s easy to imagine that putting up a birdhouse or nestbox is a relatively recent practice. But in Turkey, it has a long history. Since at least the 13th century and continuing through the period of Ottoman rule, birdhouses were placed on all sorts of structures: mosques (like this one –…

Tucked away in southeast Texas is one of the most remarkable enclaves of nature. Known as The Big Thicket, this region is home to ten different ecosystems, including cypress bayous, arid sandylands, palmetto thickets, pine forests, marshes, and grasslands. The variety of natural landscapes…