Likely Rock Pigeon (feral pigeon), also called Rock Dove; exact species uncertain from a single feather.

A gray flight feather with a dark tip and extensively disordered lower vane. Rock Pigeons are stout, familiar birds with variable plumage, often showing two dark wing bars; they fly rapidly with strong wingbeats and coo softly.

Mostly slate gray to charcoal with a darker tip and pale gray rachis; no clear barring or spots. The visible pattern is broadly pigeon-like but not diagnostic.

Pennaceous barbs form a smooth, tightly joined vane near the tip; lower barbs are separated, broken, or frayed. No distinct aftershaft is visible.

Straight, pale central shaft with dark barbs; barbs are dense in the intact upper vane and sparse or broken along the lower portion.

Matte, with a smooth intact tip and visibly ragged, separated barbs below; no obvious oil or powdery coating.

Probably from the wing, based on its elongated form and unequal vanes; damage prevents a reliable primary-versus-secondary assignment.

Slate-gray color, dark tip, pale rachis, and asymmetrical flight-feather shape support a pigeon-like identification, but the feather lacks distinctive markings for confident species-level identification.

Rock Pigeons occupy urban areas, farmland, cliffs, and other open habitats, nesting on ledges and building structures.

Native across parts of Europe, North Africa, and western Asia; feral populations occur widely across the world. Many populations are year-round residents.

Pigeons consume seeds and grain and serve as prey for urban raptors such as Peregrine Falcons. Rock Pigeons are widespread and generally not of global conservation concern; feather identification is not a reliable population indicator.

Other gray pigeons and doves, including Band-tailed Pigeon and Eurasian Collared-Dove, can have similar gray flight feathers; size, distinctive bands, and a complete series of feathers are needed to distinguish them.

Feral Rock Pigeons descend largely from domesticated birds, and pigeons have a long history of navigation, message carrying, and selective breeding.

Pigeons have been kept for food, sport, and communication for centuries. Feather use varies by culture; possession or use of feathers from protected wild birds may be regulated, so local rules apply.

Compare several feathers from the same location and note length, vane asymmetry, and any bars or spots; feathers near urban roosts may come from feral pigeons. Avoid relying on color alone.

Fair to poor: substantial barb loss or breakage is visible; no clear evidence of active growth, parasites, or oil contamination can be assessed from the image.