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Glaucous-winged Gull (Western Gull hybrid often included)
Semiplume / Contour transition feather with plumulaceous base

Glaucous-winged Gull (Western Gull hybrid often included)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Charadriiformes, Family: Laridae, Genus: Larus, Species: Larus glaucescens

Family: Laridae (Gulls, Terns, and Skimmers)

Shape
Symmetrical vane with a rounded tip, oval outline, lacking emargination
Size
Approximately 4 to 5 inches long, typical of a medium-to-large body or flank contour feather for a large gulls species
Rarity
Very Common
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Description

This specimen is a soft contour feather from a large coastal gull, likely the Glaucous-winged Gull found commonly along the Washington coast. Gulls are robust seabirds with strong bills, webbed feet, and exceptional soaring abilities. They are opportunistic foragers, highly adaptable to both natural marine environments and human-altered landscapes

Colour & Pattern

Dull brownish-gray distally grading into a lighter grayish-white shaft and white fluffy base; uniform drab coloration characteristic of immature or non-breeding adult plumage phases

Barb Structure

Pennaceous at the rounded tip transitioning into long, loose, fluffy plumulaceous barbs toward the base; barbs are intact but slightly disheveled at the base with no afterfeather

Texture & Surface

Smooth and matte at the distal tip with a soft, silky, down-like texture at the proximal base; lacks oiliness or gloss

Key Features

Rounded greyish-brown tip with a distinct transition into long, white, plumulaceous basal barbs, lacking strong contrast patterns or barring

Habitat

Ocean shores, marine coasts, estuaries, rocky intertidal zones, harbors, and urban coastal areas

Geographic Range

Pacific Northwest coast of North America, stretching from Alaska down to northwestern Mexico, spending nearly its entire life cycle in marine and coastal environments

Ecological Role

Acts as an opportunistic scavenger and coastal apex predator, helping to recycle marine nutrients and clean up organic debris along shorelines

Similar Species

Other large Pacific coast gulls such as the Western Gull (Larus occidentalis) and its frequent hybrids, which share similar gray-brown tones in immature plumages

Interesting Facts

Gulls possess supraorbital salt glands above their eyes that allow them to drink saltwater and expel excess salt through specialized nasal secretions

Condition Notes

Good condition; minor fraying of the lower plumulaceous barbs, but the rachis and upper vane remain fully intact with no major structural damage

Notes

Ocean shores wa