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Mallard (also known as Wild Duck)
Primary flight feather (remex), likely P9 or P10 based on extreme asymmetry and curvature.

Mallard (also known as Wild Duck)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Anseriformes, Family: Anatidae, Genus: Anas, Species: Anas platyrhynchos

Family: Anatidae (Ducks, Geese, and Swans)

Shape
Highly asymmetrical with a very narrow outer vane and a broad inner vane; the tip is tapered and slightly rounded; the overall outline is elongated and curvaceous.
Size
Estimated at 15-18 cm (approx. 6-7 inches) in length, which is typical for a mallard's outer primary flight feathers.
Rarity
Very Common; one of the most abundant and recognizable duck species globally.
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Description

The Mallard is a medium-sized dabbling duck. Males (drakes) feature a glossy green head and white neck ring, while females are mottled brown. This feather is a workhorse of flight, built for powerful, direct wingbeats and rapid takeoff from water.

Colour & Pattern

Muted brownish-grey base transitioning to a darker, nearly blackish-brown soot color at the distal tip; the ventral side is lighter/silver-grey; the rachis is light cream to white.

Barb Structure

Densely pennaceous and interlocked for aerodynamic integrity; the base shows plumulaceous (downy) barbs for insulation; barbs appear intact with minor separation near the base.

Texture & Surface

Smooth and stiff with a slightly waxy, water-repellent (oily) coating characteristic of waterfowl; the surface has a matte to low-lustre finish.

Key Features

Extreme asymmetry of the vanes, stiff off-white rachis, and the specific gradient from greyish-brown to a darker tip without bold barring.

Habitat

Extremely versatile; found in wetlands, lakes, ponds, rivers, marshes, estuaries, and frequently in urban parks or agricultural fields.

Geographic Range

Widespread across the Northern Hemisphere (North America, Europe, Asia); introduced to Australia, New Zealand, and South America; northern populations are migratory.

Ecological Role

Generalist consumer; they act as seed dispersers and are a primary prey source for many predators, including raptors and mammals. Populations are currently stable.

Similar Species

American Black Duck (darker overall), Northern Pintail (slimmer, more pointed), or Gadwall (different color gradients). Distribution and size are key for Mallard ID.

Interesting Facts

Mallards are the ancestors of almost all domestic duck breeds. They are capable of flying at speeds up to 55 miles per hour and can migrate thousands of miles.

Condition Notes

Good condition; the feather shows natural wear at the tip and some separation of the lower barbs, suggesting it may be a naturally molted specimen.