The Bee Hummingbird, found only in Cuba, is the smallest bird in the world. An absolute miniature, even among hummingbirds, it measures only two and a quarter inches long. Often mistaken for bees, they weigh less than a dime. The female builds a nest barely an inch across, and lays eggs…

Imagine this Black-capped Chickadee flying toward its nest, carrying fresh insects for its chicks. A moment later, it emerges with a tiny white pouch in its bill. The chickadee drops the object into the vegetation below. That outgoing payload is a fecal sac, a remarkable adaptation found…

Heidi Hoelting, a musician, listens carefully to the songs of birds. In her piano studio at her home in the woods, she wrote down several variations of the different sounds a Song Sparrow makes. In this BirdNote, Nancy Rumbel plays some of those variations on a bamboo whistle. Listen to…

This Great Horned Owlet - about 2-1/2 months old and already as big as its parents - is quite well feathered, although its underparts remain downy. Its wing and tail feathers are developing nicely, and it has begun to make short flights. By mid-May, the owlet still relies almost entirely…

The most distinctive characteristic of the California Quail is the black, forward-facing topknot that juts out from its forehead like a small flag. The California Quail – the state bird of California – builds its nest right on the ground. Almost immediately after hatching, the precocial…

Hummingbirds need to consume five times their body weight each day. This Rufous Hummingbird of the West is looking for flowering plants to quench that mighty thirst on its spring migration. A feeder would work, too. Put a hummingbird feeder up in your yard, and see who turns up!

A pair of White-throated Swifts twists and turns, sailing through the air. Dashing headlong across the canyon toward an unyielding wall, the birds disappear at the last second into a slender crevice. This swift is aptly named — and doubly so. The White-throated Swift is among the fastest…

The ancient Greeks and Egyptians described a mythical bird called the Phoenix, a magnificent creature that was a symbol of renewal and rebirth. According to legend, each Phoenix lived for 500 years, and only one Phoenix lived at a time. Just before its time was up, the Phoenix built a nest…

Each spring, millions of birds head north. From Ecuador, beautiful Scarlet Tanagers fly to the eastern US and Canada, many traversing the Gulf of Mexico, an arduous journey. Across much of southern Europe, Common Nightingales – small thrushes with russet feathers – are arriving, having…

One of the most musical and complex bird songs in the US is that of the Brewer's Sparrow. It's a veritable aria, ringing forth from the sagebrush of Eastern Washington's Columbia Basin. Shrub-steppe is disappearing from the interior west as it is cleared for irrigated crops. The…