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…

This Great Horned Owlet - about 2-1/2 months old and already as big as its parents - is quite well feathered, although its underparts remain downy. Its wing and tail feathers are developing nicely, and it has begun to make short flights. By mid-May, the owlet still relies almost entirely…

Pigeons, one of the most ancient of domesticated animals, feed their nestlings a peculiar, milky substance, straight from the adult’s beak to the baby’s throat. It’s called pigeon milk, a fat-rich substance loaded with antioxidants and immunity factors that enhance the survival of newborns…

American White Pelicans have a nine-foot wingspan, nearly that of the California Condor. In summer, they breed mainly in the interior west of the United States and Canada, favoring shallow portions of lakes, marshes, and rivers, where they scoop fish from the water in the pouches of their…

A typical songbird belts out its song between 1,000 and 2,500 times per day. Even though most bird songs last only a few seconds, that's a lot of warbling! A Yellowhammer, a European bunting, may sing over 3,000 times a day. But the Yellowhammer doesn't even come close to the North…

A pair of White-throated Swifts twists and turns, sailing through the air. Dashing headlong across the canyon toward an unyielding wall, the birds disappear at the last second into a slender crevice. This swift is aptly named — and doubly so. The White-throated Swift is among the fastest…

We've all heard that the early bird gets the worm. But research shows that birds dining early and heavily may lower their life expectancy. Socially dominant birds stay lean (and agile at avoiding predators) during the day, and then stoke up later, before a cold night. Subordinate birds…

The ancient Greeks and Egyptians described a mythical bird called the Phoenix, a magnificent creature that was a symbol of renewal and rebirth. According to legend, each Phoenix lived for 500 years, and only one Phoenix lived at a time. Just before its time was up, the Phoenix built a nest…