Feather Identifier app iconFeather Identifier
Ruby-throated Hummingbird (Archilochus colubris)
Contour (Body feathers) and Tail (Rectrices)

Ruby-throated Hummingbird (Archilochus colubris)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Caprimulgiformes, Family: Trochilidae, Genus: Archilochus, Species: A. colubris

AI-generated identification · may be incorrect

Family: Trochilidae (Hummingbirds)

Shape
Generally rounded and spatulate; small and broad with a slightly pointed distal end. The tail feathers are more elongated and slightly asymmetrical.
Size
Miniscule, approximately 5-10mm (0.2-0.4 inches) in length. This is consistent with the standard contour feathers of the species, which are among the smallest in the avian world.
Learn more about Ruby-throated Hummingbird (Archilochus colubris) in the encyclopedia →

Found a feather like this?

Identify any feather from a photo, free.

Identify a feather

Description

The Ruby-throated Hummingbird is a tiny, hover-flying bird with a slender bill. Males feature a brilliant red iridescent gorget and metallic green back, while females have white throats and buffy flanks. They are known for their rapid wingbeats and territorial behavior.

Colour & Pattern

Brilliant iridescent emerald green on the dorsal surface, resulting from structural coloration (interference of light). The darker feathers are deep charcoal to brownish-black with a faint bronze-green sheen. The underside is typically a duller grey-white.

Barb Structure

Pennaceous at the tips for water resistance and structural integrity, with a small plumulaceous (downy) base. The barbs are highly specialized to support iridescence through microscopic structure.

Rachis & Barb Pattern

A very fine, dark, and flexible rachis. Barbs are extremely dense, situated at a tight angle to the rachis to create a smooth, continuous surface for light reflection.

Texture & Surface

Smooth, glossy, and highly metallic in appearance. The surface feels somewhat stiff for its size due to the dense interlocking of the barbs to maintain the aerodynamic shape.

Feather Placement

Body (back/mantle) for the green iridescent feathers; likely tail (outer rectrices) for the darker, blackish-green feathers.

Key Features

Tiny size (sub-centimeter), intense iridescent emerald green structural color, and spatulate shape typical of Trochilidae.

Habitat

Deciduous and mixed forests, gardens, orchards, and meadows. They are frequently found in suburban areas with abundant nectar-producing flowers and feeders.

Geographic Range

Breeds in Eastern North America (East of the Rockies) and Southern Canada; migrates across the Gulf of Mexico to winter in Central America (Mexico to Panama).

Ecological Role

Primary pollinator for many tubular flowers and a specialized insectivore (consuming gnats and spiders). They are vital indicators of floral biodiversity.

Similar Species

Black-chinned Hummingbird (virtually identical feathers, differentiated by range) and Anna's Hummingbird (slightly larger, more rose-toned iridescence in males).

Interesting Facts

These birds can beat their wings up to 80 times per second and are the only birds capable of sustained backward flight. They migrate over 500 miles across the Gulf of Mexico in a single non-stop flight.

Cultural Significance

Hummingbirds are symbols of joy, healing, and agility in many Indigenous American cultures. Historically, their feathers were used in intricate 'featherwork' mosaics by Aztec royalty (Amanteca).

Field Identification Tips

Look for these beneath flower bushes or hummingbird feeders during late summer molting (August-September). Because of their size, they are often overlooked and resemble leaf fragments.

Condition Notes

Fair to Good. Some feathers show signs of displacement from the quill (calamus) and slight fraying of the barbs at the edges, likely due to post-molt handling or collection.