Likely Mallard (wild duck); species identification is uncertain from one feather.

This is a two-toned feather with a pale outer-looking vane and a dark central-to-opposite vane, plus a soft basal tuft. A Mallard is a familiar medium-large dabbling duck; males have a green head in breeding plumage, while females are mottled brown.

One side is mostly pale gray-white, while the other is dark charcoal with a pale tip and a dark band beneath it. This pattern is not enough to confirm Mallard or determine sex or age.

The vanes appear mostly pennaceous and joined; fine barbs are visible, with loose downy barbs near the base.

A slender, pale rachis runs through the feather; barbs are closely arranged in the dark and pale sections, with a fluffy basal portion.

The vane looks smooth and matte, with some looseness or fraying near the base; waterproofing cannot be assessed from a photograph.

Probably from the wing: the broad, coherent vane and contrasting coloration fit a flight or cover feather, though the precise tract is uncertain.

Strong pale-versus-charcoal contrast, rounded tip, and narrow wing-feather-like outline. These traits are not species-diagnostic without location, scale, or comparison feathers.

If from a Mallard, likely associated with wetlands, ponds, lakes, rivers, marshes, and urban park waters.

Mallards occur widely across North America, Europe, and Asia, with introduced populations elsewhere; many northern birds migrate, while others remain year-round.

Mallards graze and dabble for aquatic plants and invertebrates, serving as prey for larger predators and moving seeds among wetlands. Their broad range and adaptability make them common, though wetland loss and hybridization with domestic ducks can be concerns.

Other ducks, gulls, pigeons, and some shorebirds can have pale-and-dark wing feathers. A full wing pattern, feather measurements, and locality are needed for reliable separation.

Mallards are adaptable dabbling ducks that feed by tipping forward in shallow water. Domestic ducks descended largely from Mallards.

Duck feathers have historically been used for insulation, bedding, and fly-tying; wildlife-feather possession and trade may be regulated, so identify and check local laws before keeping it.

Photograph both sides beside a ruler and record where it was found; compare several feathers rather than relying on color alone. Avoid collecting feathers where local or national laws prohibit it.

Appears generally intact, with loose basal down and slight edge wear; no clear fault bars or contamination are visible. Condition: Good.