Adjusting the flaps on an airplane’s wing allows a pilot to control lift and drag — and the design of these flaps was inspired by the wings of birds. All flying birds have what’s called an alula on each wing. At the center of the front edge of the wing is a structure covered with three to…

Ranging from metallic hisses to electronic yodels, sounds of grackles may not be music to our ears—but they have their own rough beauty, a distinctive, primal harshness. Grackle songs evolved to carry through their nesting habitats — dense marshes and brushy landscapes — where more lyrical…

By late summer, most birds hatched in spring are on their own, without help from their parents. Where do they go? Young migratory birds will head south in late summer or fall, in the pattern of their species. But most non-migratory birds born last spring — such as this immature Bewick’s…

Found in the Sierra Madre, the Arizona Woodpecker has a special connection to the mountain range. Sharing mid-elevation pine and oaks with fellow border straddlers, these small brown birds with white and brown cheeks stand out from other Woodpeckers with their heavily marked white…

It’s been said that if someone knows only three birds, one of them will be the crow. They’re common, easy to see, and even easier to hear. But crow voices are complicated. Altogether, crows may use 30 sound elements in different combinations, and one of the most intriguing is their song…

Pigeons seem to bob their heads as they move, like they’re grooving to an internal tune. But what look like head bobs are actually momentary pauses of the head while they walk. Their eyes are fixed in their sockets, so that pausing enables the pigeon to take a brief, steady view of its…

The four species of South American bellbirds can make a real racket, including this Bearded Bellbird. Hidden in the tree canopy, males cannot see one another as they sing — but they sure can hear each other! Their ear-splitting songs carry over long distances. The loudest of the species is…

Male Northern Cardinals, Scarlet Tanagers, and House Finches all have striking red plumage that’s thought to play a role in attracting mates. Males with the brightest red feathering tend to have the best luck with the females. Scientists think that a male’s redness signals to females that…

By August, most birds in North America have finished nesting, bringing billions of new birds into the world. So many birds. It might make you wonder: what is the most abundant bird in North America?

Ospreys are remarkable nest builders. Many reuse their massive stick nests from the previous year, but continue tinkering with it once the nesting season begins. And the nest transforms along with the growing chicks. It’s bowl-shaped at first, corralling the young birds, but it gets…