During the day, an American Robin, a member of the thrush family, sings a lovely, familiar song of rich phrases. But as the sun begins to set, robin song takes on a different character. From sunset until dark, a robin adds ethereal whispered notes to its carol, creating a song of…

Many birds drink while standing — dipping their beaks into a pond or birdbath, taking a beakful, and then tossing their heads back to swallow the water. But drinking on the wing suits swallows best. They walk awkwardly on the ground, and their long wings are cumbersome. So it’s far more…

Birds communicate with a fascinating array of instrumental sounds, and nearly all are made with their feathers or bills. The territorial drumming of a woodpecker - like this Black-backed Woodpecker - is one example. American Crows clatter their beaks to make rattling sounds. And the…

Named after their distinctive cat-like “mew” call, Gray Catbirds are mimic thrushes, related to mockingbirds and thrashers. They can imitate a wide variety of noises, from songbirds to mammals to frogs. Noisy and boisterous in the spring, a migrating flock of catbirds can fill a city park…

Peer into an owl's face – there is something almost human about its large, forward-facing eyes. The Great Gray Owl, which stands two feet tall and weighs 2 and 1/2 pounds, has eyes larger than those of most humans! Enormous eyes enable owls to see in near darkness. An owl's retinal anatomy…

The native pinewood forests of the Scottish Highlands are home to many species, but among the most striking is the Western Capercaillie – the largest living grouse species. Their future in the highland forests is under threat. But a conservation task force headed by the Royal Society for…

Spring has reached the Arctic. Low-growing wildflowers carpet slopes of tundra, and arriving migratory birds begin to sing: Lapland Longspurs, Hoary Redpolls, Snow Buntings, Bluethroats, and more.

A bird’s crest is made up of a slender array of feathers on top of its head. These feathers are a bit longer and can be spiked up or slicked back, depending on what the bird is trying to communicate. Even birds without crests, like crows or sparrows, sometimes puff up their short crown…

In the rural Southeast, roadside ditches – known as “bar ditches” – carry on for miles. The term bar ditch probably comes from their construction, when dirt was "borrowed" to build up the road. The ditches are full of water and full of life, these narrow wetlands. Herons stalk the shallow…

The American Kestrel is the smallest, most numerous, and most widespread North American falcon. This bird is built for speed, its long pointed wings often bent back at the tip. While hunting, kestrels hover above an open field. These days, the lack of suitable nesting cavities, which…