Sapsuckers drill small holes in the bark of favored trees, then return again and again to eat the sap that flows out. And hummingbirds, kinglets, and warblers come to the sap wells to eat the insects trapped in the sap. Although a sapsucker, like the Red-breasted Sapsucker pictured above…

Long-billed Curlews are the largest shorebirds in North America. In his courtship display, the male Long-billed Curlew flies a series of arcs across the sky, calling as he goes. Outside of the breeding season, they roost and forage in mixed flocks. When the flock is disturbed, the curlews’…

The Florida Keys extend from the state's peninsula like a string of pearls, and pearls they are, in their uniqueness and value. Stands of hardwood trees rise above the islands' level ground. These trees draw many birds of the Caribbean to the keys' tropical habitat. One of these is the…

Con un peso similar al de cuatro clips, los sastrecillos ( Psaltriparus minimus) son más pequeños que muchos colibríes. Y aprovechan al máximo su diminuto tamaño. Mientras otras aves insectívoras buscan alimento sobre las hojas, los sastrecillos cuelgan por debajo, atrapando a los insectos…

Greater Yellowlegs — not surprisingly — have bright yellow legs and feet. And why? While foraging through shallow water, a yellowlegs can keep track of its legs by the color, which contrasts with the sometimes dark and irregular bottom. A Sanderling, on the other hand, has black legs and…

Why are blackbirds black? One possible answer is that black is conspicuous against just about all of Nature's backgrounds. Blackbirds, like this flock of Red-winged Blackbirds and Yellow-headed Blackbirds, feed on the ground. Whenever a predator approaches, they take flight. Coming…

No es de sorprender que los patamarillas mayores tengan patas y pies de color amarillo brillante. ¿Por qué? Mientras caminan por aguas poco profundas, un patamarilla mayor ( Tringa melanoleuca; como este) no deja de ver sus patas gracias a su color, mismo que contrasta con el oscuro e…

The Hoatzin is a strange bird, indeed! It looks like it was put together by a committee. But the way it looks isn't the only thing that sets this bird apart. The Hoatzin is strictly a leaf-eater, filling its stomach with leaves, and then resting and digesting for long periods. Chicks have…

The feathers of a bird are, for their weight, among the strongest structures in the world. The bones of this Magnificent Frigatebird weigh less than its feathers! To further reduce weight while maintaining strength, many bird bones are fused. In addition, the pectoral and pelvic girdles…

The Swainson's Warbler is one of North America's shyest birds. These birds forage quietly on the ground, flipping over leaves to expose and capture insects. They scurry away, calling in alarm when big-footed humans invade their shadowy habitat. On their wintering grounds, in the Blue…