In the mid-20th Century, Dutch scientist Niko Tinbergen studied nesting Herring Gulls. He noticed that newly hatched chicks were fed by their parents only after they pecked at the adults' bills. Tinbergen devised experiments that varied the shape and coloration of the adult's bill. It…

Waterfowl such as this Greater White-fronted Goose have long followed a predictable schedule, flying south in autumn after breeding in the north. But for some birds, climate change may be delaying fall migration. Beginning in 1979, scientists in northern Europe recorded migration dates of…

Willow Flycatchers nest across the northern two-thirds of the U.S. and southernmost Canada. A subspecies, known as the Southwestern Willow Flycatcher, nests in the Southwest, as far east as Texas. The Southwestern Willow Flycatcher was listed as endangered in 1995. It's just one of 300…

Scientists once believed that Australia’s songbirds — such as this Superb Lyrebird — were the result of lost birds from Asia and Africa colonizing the continent. But recent research has changed that thinking. It turns out that the Australian continent was the evolutionary epicenter of much…

Native to the Southeast across to East Texas, Red-cockaded Woodpeckers differ from most woodpeckers. They remain in cooperative family groups throughout their lives. And they excavate nests in living trees rather than dead ones, often reusing the same cavities for decades. The federal…

The House Wren presents us with a classic bird image. That jaunty tail, twitching sharply as the wren scolds, puts an exclamation point on the bird's perky voice and attitude. The word "wren" comes to us intact from the Old Norse and Anglo-Saxon languages, where it referred specifically to…

Brain imaging studies have shown that hearing enjoyable music “lights up” the mesolimbic reward pathway in the human brain. But how does a bird experience a song from its own species? Scientists at Emory University found a similar pattern in the sparrow’s brain. Female White-throated…

One of the most remarkable singers on the European continent is the Bluethroat. Often singing while fluttering aloft, Bluethroats mix their own song elements with imitations of just about every bird within hearing distance. They'll even try their luck with crickets, tree frogs, and train…

All 50 states and the District of Columbia have official birds. To become a state bird, it helped to be familiar, colorful, and have a punchy song. The Northern Cardinal perches as state bird in seven eastern states, the Western Meadowlark in six western states. Bluebirds - like this…

Some birds are born with the ability to sing. Others learn to sing while they're young — just like humans, who must learn to speak. It turns out that vocal learning in songbirds and humans may have more in common than anyone suspected. Recent DNA research reveals that songbirds and humans…