Domestic Goose (often used in Down products), potentially Graylag Goose or Swan

This is a soft, insulating body feather characterized by its loose, fluffy structure. Unlike flight feathers, its purpose is thermodynamic regulation, trapping heat close to the bird's body. The bird it belongs to is typically a large waterfowl with a heavy body and long neck.

Uniformly grayish-brown or 'dusty' taupe. No distinct banding or marks. The color is consistent with natural, unbleached down from domestic gray goose varieties.

Plumulaceous (downy) for the majority of the feather. The barbs are long, flexible, and lack the interlocking barbules (hooklets) that create a solid vane.

The rachis (central shaft) is very thin, flexible, and translucent. The barbs radiate outward at wide angles to maximize air-trapping for warmth.

Extremely soft, wispy, and lightweight. It has a matte finish and lacks the oily waterproofing of outer contour feathers.

Body feather (under-layer for insulation), likely from the breast or belly region.

Plumulaceous (fluffy) barbs throughout, thin flexible rachis, small size, and lack of a structured pennaceous vane.

Widely distributed in agricultural settings (domestic) or wetlands, lakes, and marshes (wild).

Global distribution due to domestication; wild Graylag geese are found throughout Europe and Asia.

Provides critical thermoregulation for waterfowl, allowing them to survive in freezing water and climates.

Domestic Duck (Anas platyrhynchos domesticus) down is similar but often smaller and white; wild Canada Goose down is darker.

Down is one of the most efficient natural insulators in the world because it creates thousands of tiny air pockets that trap warm air and retain heat.

Historically and currently the primary material for high-end winter clothing and bedding. The feather trade for down has existed for centuries.

In a field setting, these are found in 'pluck sites' where a predator has eaten a bird, or at nesting sites. In this context, it is likely escapee down from the jacket fabric shown.

Good; showing typical compressed barbs often seen after being removed from a stuffed garment or bedding element.