
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
- Symmetrical vane with a slightly rounded to squared tip, typical of passerine tail feathers.
- Size
- Approximately 2 to 2.5 inches long, consistent with the outer tail feathers of a small songbird like the Dark-eyed Junco.
- Rarity
- Very Common
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Description
The Dark-eyed Junco is a small, neat sparrow often affectionately called a 'snowbird' due to its arrival in winter. This specific feather is an outer tail rectrix, famous for its diagnostic white flash that is conspicuously flicked open as the bird hops along the ground.
Colour & Pattern
Bicolor pattern featuring a dark slate-gray basal and inner web contrasting sharply with a bright white outer web and tip, serving as a classic flash field mark.
Barb Structure
Pennaceous structure with tightly interlocked barbs and barbules along the upper portion, transitioning to slightly looser barbs near the base.
Texture & Surface
Soft yet structurally firm for flight control, smooth matte texture typical of small perching bird tail feathers.
Key Features
Striking and abrupt contrast between dark slate-gray and pure white on a relatively small, delicate tail feather.
Habitat
Coniferous and mixed forests, forest edges, brushy areas, 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
Consumes vast quantities of weed seeds and insects during the breeding season, serving as an important seed predator and foraging component of forest floor ecosystems.
Similar Species
Other sparrow and towhee species with white tail markings, though the exact extent and clean division of the slate-gray and white in the Junco are distinctive.
Interesting Facts
Juncos are frequent visitors to backyard bird feeders and are part of a complex species group that hybridizes in overlap zones across North America.
Condition Notes
Good condition with intact barbs and minimal wear, showing clear structural integrity.