Dark-eyed Junco (specifically the Oregon or Slate-colored subspecies group)

The Dark-eyed Junco is a medium-sized sparrow with a round head and long tail. Plumage varies by region (e.g., 'Oregon' juncos have brown backs and pinkish flanks, 'Slate-colored' are uniform gray), but all share a pink bill and distinctive white outer tail feathers that appear as flashes of white in flight.

Bicolor pattern: The distal (top) half of the feather is a crisp, bright white, while the proximal (bottom) half is a dark slate-gray to charcoal. The transition between colors is relatively sharp.

Pennaceous and tightly interlocked throughout the majority of the vane for flight stability; plumulaceous (downy) barbs are visible at the very base near the calamus.

Smooth and somewhat stiff pennaceous vane; matte finish without iridescence. The trailing edge is slightly broader than the leading edge.

The sharp contrast between the charcoal-gray base and the stark white tip on a tail feather of this small size is diagnostic for the Junco hyemalis species complex.

Coniferous or mixed-coniferous forests for breeding; during winter, they are found in open woodlands, fields, parks, and suburban backyards (often near feeders).

Broadly distributed across North America. Breeds in the north and at high elevations; migrates to the lower 48 U.S. states and Mexico for the winter.

Primary consumer of seeds and small insects; serves as a vital food source for smaller hawks like the Sharp-shinned Hawk.

Vesper Sparrow (also has white outer tail feathers but lacks the solid dark gray base) and Black-chinned Sparrow (smaller, different gray distribution).

Juncos are often called 'Snowbirds' because their sudden appearance in suburban backyards often heralds the first winter snows. Their white tail feathers serve as a 'flash' signal to confuse predators or communicate with the flock.

Good to Fair. There is some minor fraying and separation of the barbs at the white tip, typical of a molted feather or one subjected to ground wear.