May in an Eastern hardwood forest, and the chorus of spring birdsong is nearing its peak. The Carolina Wren, a year-round resident, has been singing since the end of winter. The resounding notes of this Ovenbird let us know it has returned safely from Belize, after a long flight across the…

Birding is often best in the least likely places. At sewage treatment plants, watch for ducks and gulls – and raptors keeping watch over them all. Another place might be your local landfill or dump. The Brownsville, Texas dump was, for years, the only place in the U.S. you could find this…

Cactus Wrens, which may nest several times between March and September, carefully orient their nests in tune with the season. These bulky twig structures have a side entrance that curves toward the inner chamber. When building a nest for the hot months, the wren faces the opening to…

The eerie sound of the Great Tinamou can be heard in the lowland jungle throughout much of Central and South America. Secretive — and almost impossible to see — Great Tinamous call early and late in the day. And their voices carry a long distance.

Aplomado Falcons were once widespread residents of the American Southwest, but by the 1950s, they'd disappeared entirely from the region. Loss of habitat, loss of prey, and pesticides all played a role. But in the 1980s, a group called The Peregrine Fund began breeding captive Aplomado…

A hummingbird's brilliant throat feathers are called a "gorget," a term applied in past centuries to the metallic swatch protecting the throat of a knight-in-armor. Light waves reflect and refract off the throat feathers, creating color in the manner of sun glinting off a film of oil on…

It's spring! And for many birds, a time to look their best to attract a new mate. This American Goldfinch has recently molted. Its old, worn-down feathers have fallen out, and new ones have grown in. When goldfinches molt in the fall, they lose these brightly colored feathers. Their winter…

House Wrens dart from perch to perch and sing almost nonstop. They’re one of the most thoroughly studied songbird species. House Wrens nest in cavities, including backyard nest boxes. Most migrate south in late summer. The male House Wren sometimes builds multiple nests, allowing his mate…

Each spring, millions of songbirds migrate north from the tropics to nest in North America. It takes 15 hours on average to cross the roughly 500 miles of the Gulf of Mexico. If wind or rain slows the crossing, the birds are worn out and famished when they reach land. What will they find…

The Wilson's Snipe lives in marshes and muddy areas, where it probes for worms and other squirmy delights. But when spring comes, it takes to the air. The male Wilson's Snipe circles high above in a series of roller-coaster arcs, each descent marked by a loud and distinctive sound. This…