Mallard (specifically the flank feather of a breeding drake)

This feather belongs to the iconic Mallard drake. While the head is iridescent green and the chest is chestnut brown, the flanks are covered in these beautiful, finely-penciled grey feathers. Mallards are large dabbling ducks with a wingspan of about 32-39 inches.

Distinctive 'vermiculation' pattern consisting of fine, wavy, charcoal-grey zig-zag lines over a white to creamy-pearl background. The underside is a pale, uniform matte white.

The distal (top) half is pennaceous with tightly interlocked barbs creating the vermiculated pattern. The proximal (bottom) half is highly plumulaceous (downy) for insulation.

The pennaceous part feels smooth and slightly firm, while the base is extremely soft and silky. The surface is somewhat water-repellent due to preen oils.

The fine, wavy, zig-zag grey 'vermiculation' on a white ground is a diagnostic trait for Anas drakes, particularly the Mallard.

Found in almost every wetland habitat, including lakes, ponds, rivers, marshes, estuaries, and urban parks.

Widespread across the Northern Hemisphere. Found throughout North America, Europe, and Asia; introduced to Australia and New Zealand.

Omnivorous dabblers that serve as prey for raptors and mammals, and act as significant dispersers of aquatic plant seeds.

Gadwall drakes have similar vermiculation but it is typically darker and denser. Northern Shoveler drakes also have vermiculated flank feathers but they are usually tinged with more rufous/brown tones.

Mallards are the ancestors of almost all domestic duck breeds. Their 'vermiculated' feathers are specially evolved to break up the bird's outline against shimmering water, acting as camouflage.

Fair to Good. The feather shows some separation of the barbs (gaping) and the downy base is slightly matted, likely due to exposure to the elements after being molted.