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…

Is there any doubt about the identity of America's best known red bird? Surely it's the cardinal or, as you'll find it in a bird book, the Northern Cardinal. The beautiful bird seen on so many bird feeders takes its name from the cardinals found in the Vatican, whose hats and robes are red…

While it’s still winter in many parts of North America, it’s summer in Antarctica. And the King Penguins are singing! Some form breeding colonies that number in the tens of thousands. When many pairs of these colorful birds tip their heads back and sing, it sounds like the world’s largest…

For some of us, it’s hard to get excited about gulls. But they are just as fascinating – and have as much to tell us – as other birds. Take the Herring Gull, for example. Its appearance is striking, and its voice is unforgettable. Along the Atlantic coast of North America, the nesting…

Crows are found on every continent except South America and Antarctica. And while there are a lot of similarities, there are a lot of differences, too. Imagine a powder-gray crow with a pink beak. There’s one thing they have in common, though: they’re all smart.

Long-tailed Ducks are back for the winter from the north, where they nested on tundra ponds and marshes. These diving ducks spend the winter in deep salt water, often in sheltered bays. Long-tailed Ducks are far more vocal than most ducks, a feature that has earned them a host of charming…

There are nearly ninety species of wrens in the world, and quite a few are exceptional singers. Nearly all of them reside in the Western Hemisphere, with the majority living in Central and South America. The White-bellied Wren ranks among the tiniest, at just under four inches, while the…

Sharp, insistent cries signal the presence of one of North America’s most beautiful birds of prey: the Red-shouldered Hawk. There’s no mistaking this striking hawk for any other; the front of its body glows bright chestnut, the back boldly spangled black and white, the shoulders, that same…