Sometimes, a species’ song changes over the course of a few decades. But a bird that lives in the mountains of eastern Africa, the Forest Double-collared Sunbird, appears to have kept the same song for at least 500,000 years. That’s the amount of time that two populations of the species…

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?

In the blue skies over the Andes Mountains, Andean Condors look majestic, with a ten-foot wingspan. While flying, according to researchers from Argentina and the UK, Andean Condors only flap one percent of the time. One bird was tracked for more than 100 miles over five flapless hours.

During the breeding season, when Eastern Screech-Owls capture the worm-like reptiles known as blind snakes, they deliver them to their chicks alive and wriggling. Some are gulped down immediately, but others escape by burrowing beneath the nest. The surviving “snakes” feed on the insect…

An unusual flycatcher called the Great Kiskadee takes on much bigger opponents, sometimes even riding on the back of a falcon for a few seconds to drive them off. Chunky and robin-sized, kiskadees live along wooded edges near water all the way from South Texas to Argentina. They’re a…

Midday temperatures in southeast Arizona soar above 100 degrees during the month of July. But relief is coming. A summer monsoon refreshes the Sonoran Desert like a second spring. Grass grows lush, wildflowers spring forth, and birds sing. Cassin’s Sparrows sing their plaintive phrases…

Found in much of Central America, White-throated Magpie-Jay flocks are family groups led by a dominant female. They include a mate and several female offspring that bring food to the primary female and her young. It’s an example of cooperative breeding, when birds other than the parents…

Throughout much of North America, the Great Blue Heron graces waterways, ponds and lakes. They’re built for hunting fish and amphibians along the water — so it might be a surprise to see one stalking across a field, not a drop of water in sight! But sometimes herons leave the water to…