Each spring, eight species of swallows — including this Barn Swallow — migrate north from the tropics to nest in North America. Tree Swallows and Purple Martins are especially dependent on man-made nestboxes. Tree Swallows nest over much of the continent, while Purple Martins are most…

A Great Bustard shows off to a group of females by inflating special neck sacs – producing what sounds like a massive sneeze followed by a Bronx cheer. He flips his wings almost upside down to reveal bright white undersides, while fanning his tail and long, white throat whiskers. Three…

In wet mountain forests of Costa Rica, a slate-gray bird like this one sings as it moves furtively in the dense understory. It’s the Black-faced Solitaire. Naturalist and birding guide Roger Melendez has been listening to its eerie and gorgeous song for over 20 years. But even Roger has a…

One male Red-winged Blackbird’s marshland territory may include five—or even as many as fifteen—nesting females. And he makes an effort to mate with every one of them. Biologists call this polygyny - when one male claims breeding rights with multiple females. But while this may look like…

Song Sparrows are found throughout the United States and into Southern Canada. To bring them into your garden, plant thick, low vegetation, or create a brush pile. This sparrow is celebrated - and named - for its singing. Without its melodious song, this furtive bird could be overlooked…

In the 1800s, Wood Ducks were possibly the most abundant ducks east of the Mississippi. But the draining of wetlands, the cutting of forests, and market hunting caused precipitous declines. In 1918, the Migratory Bird Treaty Act completely banned the hunting of Wood Ducks for 23 years…

This Earth Day, we invite you to join us and help Bring Birds Back. You could help preserve the wetlands to protect the American Bittern and its otherworldly song, or keep the Sharp-tailed Grouse with us. Learn more ways you can help from our conservation partners. And find out what Earth…

In Rare & Elusive Birds of North America, naturalist William Burt writes about Sprague's Pipit, also known as the Missouri Skylark. "Upward he goes, in bounding spirals: two, three, four, even five-hundred feet above the plain it is supposed; then he weaves about slowly, easily, as if…

One of the most ethereal of spring sounds is that made by the Wilson's Snipe. Much as if they were playing a reed instrument, the male snipe produces a winnowing sound in flight by metering, with his wings, the flow of air over his tail-feathers. Among the most venerable of practical jokes…

In higher animals, the brain is like a Lamborghini — amazing engineering, but expensive to run. In a human, the brain uses about 10 times more energy than other organs. A bird's system is exquisitely attuned to this expense. Several species, including Black-capped Chickadees, have adapted…