Blackbird songs have a strange music. The Red-winged Blackbird can be heard in nearly every marsh on the continent — bold, brassy, and piercing. The songs may not seem musical, but they definitely get your attention. Brewer’s Blackbirds, which live in open habitats like farms and…

Whistling as they fly, Black-bellied Whistling-Ducks are gorgeous waterfowl with bright pink bills and legs, chestnut necks and backs, and black underparts. Though most whistling-ducks live in the tropics, Black-bellied Whistling-Ducks are found in the U.S. along the western Gulf Coast and…

It's winter, and apples litter the ground. A few still hang, frozen and thawed again and again. Suddenly a flock of hundreds of birds rises from the ground beneath the trees, swarming in tight formation, wing-tip to wing-tip. Bohemian Waxwings are erratic winter visitors from their nesting…

The Tui is one of New Zealand’s most remarkable birds, intelligent and with iridescent feathers. Its down-curved beak fits perfectly into native flowers. But the Tui is best known for its voice. Each Tui’s complex song is slightly different, a colorful mix of musical notes and offbeat…

A bird with abnormal white feathers, like this American Robin, may have a genetic condition called leucism. Leucism prevents pigments from reaching some — or sometimes all — of a bird’s feathers. Albino birds are distinctly different and are entirely white with pink skin and eyes. Albinos…

Birds’ four-chambered hearts run larger than those of mammals, relative to body size, and they are coupled with extremely efficient cardiovascular systems. The energy demands of flight require these adaptations. An exercising human has a heart rate around 150 beats per minute. In contrast…

El paíño de Elliot es un ave de mar pequeña, de plumaje blanco y negro que se puede observar en las costas de Chile y Perú. Los paíños pasan toda su vida en el mar, excepto cuando anidan, lo que ha intrigado a los científicos por mucho tiempo al tratar de encontrar dónde lo hacían. Una…

Gyrfalcons are the largest falcons in the world, with a wingspan of almost four feet and weighing almost five pounds. The name “Gyrfalcon” derives from an Old Norse word for “spear.” During the summer, you’ll find Gyrfalcons on the tundra, where they feed on arctic birds. But in the winter…

The nuthatch’s beak is all business. Long, slender, sharp: it can pluck a tiny spider from a crevice in the bark or carve a nest hole right through the outer hide of a tree. And the Brown-headed Nuthatch is even known to use tools! Picking up a flake of pine bark in its beak, the bird uses…

En la región baja del Valle del Río Grande en Texas, donde el Río Bravo hace frontera con Estados Unidos, las aves que comúnmente se encuentran en América Central llegan a su rango norte más extremo. Aquí puedes encontrar aves fascinantes como este mosquerito chillón, un pequeño…