Hummingbird Encyclopedia

Hummingbird species belong to the family Trochilidae, comprising over 360 species found exclusively in the Americas — from southern Alaska to Tierra del Fuego. North America hosts about 17 regularly breeding species, with the highest diversity in the southwestern United States and Mexico.

Hummingbird identification depends on several field marks: throat (gorget) color, body size, tail shape, bill length, and geographic range. Males are typically more colorful, with iridescent gorgets that flash different hues depending on lighting angle. Females are often green above and whitish below, making them considerably harder to distinguish.

Hummingbird nectar is the primary fuel source for these remarkable birds, supplemented by small insects and spiders for protein. The ideal nectar solution for feeders is a 4:1 water-to-white-sugar ratio — never use red dye, honey, or artificial sweeteners. For backyard birding enthusiasts, planting nectar-rich flowers alongside a feeder creates the most attractive habitat.

Hummingbird migration is one of nature's most impressive feats. The Ruby-throated Hummingbird crosses the Gulf of Mexico non-stop — up to 500 miles — on a fat reserve weighing less than a paper clip. The Rufous Hummingbird makes the longest migration relative to body size of any bird on Earth, traveling up to 3,900 miles between Mexican wintering grounds and Alaskan breeding sites.

Hummingbird nesting is a feat of engineering miniaturization. Most species construct a tiny cup of plant fibers and spider silk — stretchy enough to expand as chicks grow — often camouflaged with lichens on the outside. Females alone build the nest, incubate eggs (12–19 days), and raise chicks to fledging (18–28 days).

Use this encyclopedia for hummingbird species identification, garden planning, migration timing, and conservation research. Each profile includes range maps, food plant lists, and tips for attracting that species to your backyard.