The Scaly-breasted Wren lives in Central and South America, and has a lengthy song of whistled notes separated by pauses. By analyzing song recordings, researchers found that Scaly-breasted Wrens can precisely measure out pauses  — even as they increase to several seconds. The findings suggest that the wrens have an internal metronome as accurate as a highly-trained musician playing a solo.

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A pint-sized Northern Pygmy-Owl, not much bigger than a pine cone, hoots from a tree-top on a winter morning. Before long, this diurnal owl - a determined predator of small birds and mammals - will attract a mob of a dozen or more small birds. Mobbing may be a collective response to danger. But it's not certain if the "mobbers" hope to drive away the predator, or simply draw attention to the threat.

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Skateboarder and birder Dave Mull remembers the first time he heard a Steller’s Jay imitating a Red-tailed Hawk. “These Steller's Jays were pretending to be something they were not, kind of tricking the world,” he says. It got him into the mindset that he could attempt a terrifying new skateboard trick called the “stump jump.”

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For today’s bird walk, we’re going to need binoculars, sunscreen, hiking boots, annnnnd a time machine. Let’s set our course for the late Cretaceous Era, 65 million years ago. Stay alert! There are dinosaurs all around us, of all sizes — and appetites — including some of the earliest birds, like this Ichthyornis.

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During winter, the Greater Sage-Grouse is wholly reliant on its namesake species — sagebrush — for both shelter and for food. Scientists call this bird "sagebrush obligate," meaning it needs this plant to survive. In the spring, its diet shifts to insects and plants, as it gets ready for the most fantastic mating show in the west — the lekking season.

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These Downy and Hairy Woodpeckers appear nearly identical, but the Hairy Woodpecker is larger than the Downy, with a distinctly longer bill. And it doesn't have the black spots on its outer tail feathers like the Downy. But even if you can’t observe these spunky birds, you can identify them by listening carefully. The call of the Downy Woodpecker is soft and downy, like a duvet. The call of the Hairy Woodpecker is loud and hairy, like a heavy metal band!

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Clark’s Nutcracker is a clever corvid that has a special relationship with a tree called the whitebark pine. The tree’s cones don’t open on their own, and Clark’s Nutcracker is one of the few species that can pry them open. When the nutcrackers cache the seeds for the winter, they’ll leave a few behind, helping spread the next generation of whitebark pines. 

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For most birds, wings are for flying. But for Rock Pigeons, they’re also for clapping. When the pigeons erupt into flight, some may slap their wings together above their bodies in a “wing clap.” A male Rock Pigeon will also do this when courting. Short-eared Owls, like this one, have evolved wing-clapping, too. When a male displays to a female or attempts to warn off an intruder, he snaps his wings together below his body in a burst of two to six claps per second, producing a sound that sounds remarkably like . . . applause.

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Just off the southern coast of Iceland, the Westman Islands are home to many of the country’s several million Atlantic Puffins. When puffin hatchlings, known as pufflings, get confused by the lights of the city, volunteers of all ages search for wayward pufflings on the street and bring them in for health checks. After the puffins get the green light, the volunteers release them along cliffs and beaches.

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Early this fall, the tiny Wilson's Warbler began its long migration to Belize, where it winters. Navigating by the stars, the 1/4-ounce bird made a series of night flights spanning more than 2500 miles. This warbler returns to the same coffee plantation each year. Taller trees that shade the coffee are a winter home for many migrants from North America.

By buying shade-grown coffee, you can help migratory birds, including the Wilson's Warbler.

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