Dark-eyed Junco (Slate-colored or Oregon morph)

This feather belongs to the 'Snowbird,' a small, plump sparrow with a distinctive slate-gray or brown head and back. Juncos are famous for their flashing white outer tail feathers, which serve as a 'follow-me' signal to others in their flock.

Distinctly bicolored. The outer vane is primarily white, while the inner vane transitions from a slate-gray or brownish-gray to a white edge. The rachis is dark near the base, lightening toward the tip.

Pennaceous at the distal end with interlocked barbicels; highly plumulaceous (fluffy) base for insulation and flexible movement

Smooth and slightly glossy in the pennaceous (upper) section, becoming extremely soft and matte at the plumulaceous (lower) base.

The sharp diagonal or longitudinal divide between dark gray and pure white on a small, narrow tail feather is unique to Juncos among similar-sized backyard birds.

Coniferous and mixed-wood forests for breeding; parks, gardens, and residential backyards during winter months.

Breeds across Alaska, Canada, and the western US; winters throughout nearly all of the continental United States and northern Mexico.

Ground-foraging granivore and insectivore; plays a major role in seed dispersal and serves as a prey base for small hawks.

Vesper Sparrow (feathers are streaked and browner), American Pipit (longer, thinner), or Black-throated Sparrow (different gray hue).

Dark-eyed Juncos are incredibly diverse, with over a dozen subspecies that were once considered separate species due to their varying colors across the continent.

Good condition. The feather appears to be a natural molt. The plumulaceous base is intact, and there are no visible stress bars or parasite damage.