Gray-breasted Wood-Wrens sing a duet. Each sings a different phrase, yet the phrases are so closely linked, it sounds like one song. Such singing is called antiphonal song. The pairs use song to stake out and hold breeding territories. Dueting is most typical of birds that live in dense…

Every March sees the annual spring migration of Tree Swallows. Most of these swallows spend the winter along the Caribbean, in Central America, and in the warmest parts of South Texas and California. Some will nest as far north as northern Alaska and Canada. Tree Swallows nest only in…

Hummingbirds' names evoke their exquisite qualities and variety, from sabrewings to woodstars to sunangels-to this Violet Sabre-wing. Central and South America are home to well over 300 species of hummingbirds! Find out more about hummingbird migration -- and what hummingbirds might be…

In early spring, a male flicker may drum on a metal stovepipe or other resonant surface to attract a mate and proclaim his territory. This doesn't damage your house. If your flicker is drilling for food, you'd better check for carpenter ants or other insects! A flicker may also be…

The Red-tailed Hawk is the most common and widespread hawk in North America. Red-tails often perch on fence posts in rural areas or even atop lights along the roadway. Watch for a large, bulky, football-shaped bird with a small dark head and a rusty-red tail. These hawks visit open fields…

In the grips of winter, when most songbirds are months away from the breeding season, crossbills are already warming up. It’s all about the food. When the evergreens hang heavy with snow and cones, crossbills can get all the calories they need for the demands of reproduction: courtship…

The flightless Ostrich is a bird of superlatives. It's the largest and tallest bird on the planet, growing to maybe eight feet tall, and weighing 250 pounds! It's also the fastest creature on two legs, capable of running at 40 miles an hour. Ostriches have never been observed to stick…

On a snow-covered field in northern Japan, two majestic Red-crowned Cranes face one another, raise their heads toward the sky, and call in unison. As they call, the pair begins to dance. They bow to one another, then throw their heads over their backs, then bow again. The pair leaps into…

The Belted Kingfisher is the one species of kingfisher found throughout most of North America north of Mexico. You'll have to go to Texas to see two other kingfishers. The quiet call of the Green Kingfisher - like this one - can be heard at wooded streams and ponds. A Ringed Kingfisher…

Looking for a project this winter? Consider giving screech-owls a helping hand. Eastern and Western Screech-Owls span the wooded areas of the continent, nesting in tree cavities left vacant by large woodpeckers. However, such natural housing opportunities are often in short supply. That’s…