Among most North American songbirds, it’s males alone who sing. But during the nesting season, we also hear female cardinals. Just when she sings and whether or not she matches his song may determine when the male brings food to the nest. Support comes from Sasquatch Books, announcing…

New Zealand was once home to a massive parrot that stood three feet tall, about hip-high to most adult humans. It’s estimated that the bird weighed around fifteen pounds, and it probably didn’t fly. But it didn’t need to, because there were no land predators at that time — between sixteen…

Webbed feet are ideal for birds that swim, on the water’s surface or under. In fact, they’re such a nifty adaptation that they evolved, independently, in several bird groups. Ducks and geese, gulls, cormorants, loons, pelicans, penguins, puffins and boobies all have webbed feet.

Birdsong owes its beauty and variety to a complex structure called the syrinx. The name comes from an ancient Greek story. Syrinx was a beautiful wood nymph, and she was trying to escape the advances of the satyr Pan. Just as Pan caught her, Syrinx was transformed into reeds. And Pan was…

By late February or March, Elf Owls depart Mexico to breed in the US. These miniscule owls weigh less than an ounce and a half — a bit less than a golf ball. During the breeding season, Elf Owls live in woodlands and desert cactus habitats from southwest Texas into southern Arizona. And…

Early spring in the West resounds with the percussive hammering of woodpeckers. Their rhythmic drumming functions as other birds' songs do, to broadcast over a long distance a clear statement of territory and mating rights. Learn about this Pileated Woodpecker and the others in this show -…

Today marks the Vernal Equinox. And birds are singing in the new season. Listen to the sounds of the Greater Prairie-Chicken, Limpkin, Vesper Sparrow, Black Scoter, Horned Lark, Sandhill Crane, Western Meadowlark, Black Oystercatcher, and Western Screech-Owl. This story was also produced…

The Kakapo of New Zealand is a kind of parrot, but one that doesn’t fly. At five pounds, it’s the world’s heaviest parrot. And like many parrots, it’s long-lived -- up to 90 years. Still, the species is highly endangered. These odd parrots evolved in an island world that lacked terrestrial…

The Lark Sparrow is large, gorgeous, and unmistakable. Because of its beauty, a Lark Sparrow was chosen for the cover of Sparrows and Buntings: A Guide to the Sparrows and Buntings of North America and the World. Lark Sparrows nest throughout the West and Midwest, in grassy habitats with…

Birds’ voices invite us to step into nature and learn more about the singers. Hearing what’s distinctive in one bird’s voice — compared to another — helps us identify our avian neighbors without seeing them. Amazing! The differences between the songs of three marsh-dwellers: the brassy…