
Greylag Goose (Western Greylag)
Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Anseriformes; Family: Anatidae; Genus: Anser; Species: Anser anser
AI-generated identification · may be incorrectFamily: Anatidae (Ducks, Geese, and Swans)
- Shape
- Broadly spatulate with a rounded tip; significantly symmetrical upper vane merging into an expansive, loose plumulaceous base
- Size
- 18cm length, 6.5cm width; this is exceptionally large for a contour feather, matching the robust size of a heavy-bodied waterfowl like a Greylag Goose
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Description
The Greylag Goose is a large, bulky waterfowl with a thick neck and orange bill. This feather is a primary insulator from its heavy body. The bird is known for its loud 'honking' calls and V-formation flight patterns
Colour & Pattern
Uniform grayish-brown (fuscous) on the pennaceous tip, transitioning to a cream or buff-colored downy base. The rachis is pale, almost translucent near the calamus
Barb Structure
Upper third is pennaceous (tightly interlocked barbs), while the lower two-thirds are plumulaceous (loose, downy structure for insulation). Barbules lack specialized silencing combs found in owls
Rachis & Barb Pattern
Thick rachis (3mm) indicating a large bird; the shaft is relatively straight with a sturdy base. Barbs are densely packed, supporting the 'dense' description from the user
Texture & Surface
Smooth and somewhat stiff pennaceous tip with a matte finish; the lower portion is extremely soft, silky, and voluminous
Feather Placement
Originating from the back (scapular region) or the upper flank. Its width and dense downy base are designed for buoyancy and thermoregulation against water
Key Features
Large size (18cm for a non-flight feather), grey-brown coloration without barring, and an exceptionally large downy base characteristic of large Anseriformes
Habitat
Wetlands, marshes, lakes, coastal estuaries, and agricultural fields near water. Common in European coastal areas like Greve Beach, Denmark
Geographic Range
Common throughout Europe and Northern Asia; northern populations migrate to Southern Europe, North Africa, and Southern Asia for winter
Ecological Role
Primary consumer/herbivore that shapes wetland vegetation; also serves as a prey species for large raptors and mammalian predators
Similar Species
Canada Goose (usually darker/blacker), Mute Swan (pure white), or Pink-footed Goose (smaller overall feather size)
Interesting Facts
Greylags are monogamous and often mate for life. They were the primary subject of Konrad Lorenz's famous studies on imprinting in animal behavior
Cultural Significance
Historically, Greylag feathers were the primary source for quill pens in Europe. Their down is still highly valued for thermal insulation in bedding
Field Identification Tips
Look for these in late summer during the post-breeding molt when geese congregate in large numbers near water bodies to shed old plumage
Condition Notes
Fair to Good; shows significant environmental wear and separation of the pennaceous barbs near the midpoint, likely from exposure on the beach
Notes
tip to shaft 18cm. shaft 3mm. width 6.5cm. brown with fluffy base. found on greve beach. dense.