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Dark-eyed Junco (Slate-colored form)
Tail feather (rectrix), specifically an outer rectrix (R5 or R6)

Dark-eyed Junco (Slate-colored form)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Passerellidae, Genus: Junco, Species: J. hyemalis

Family: Passerellidae (New World Sparrows)

Shape
Asymmetrical vane with a distinctly rounded tip and white flashing along the outer margin
Size
Approximately 2 to 2.5 inches long, typical for a small-to-medium passerine tail feather
Rarity
Very Common
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Description

The Dark-eyed Junco is a small sparrow often called a snowbird due to its arrival with winter weather. Adults have a neat hood appearance, pink bill, and a flashing white tail displayed conspicuously during flight.

Colour & Pattern

Dark slate-gray or blackish terminal portion with a striking, contrasting white outer web and tip

Barb Structure

Pennaceous vane with tightly interlocked barbs and barbicels, transitioning to slightly plumulaceous texture near the base

Texture & Surface

Smooth, matte finish with firm yet flexible vane structure

Key Features

Contrasting dark gray and crisp white pattern on the outer tail feather, typical of the slate-colored junco morph

Habitat

Coniferous and mixed forests, woodland edges, brushy areas, mountain thickets, and suburban yards during migration and winter

Geographic Range

Breeds across northern North America and mountainous regions; winters throughout most of the United States and Mexico

Ecological Role

Important seed disperser and consumer of weed seeds and insects during winter months

Similar Species

Other sparrow species with white in the tail, such as Vesper Sparrow or Eastern Towhee, but distinguished by the clean slate-gray and white contrast

Interesting Facts

Juncos flash their white outer tail feathers when flushed to startle predators and communicate with flock members

Condition Notes

Good condition with minor wear at the distal tip and some fluffing at the base