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Ring-billed Gull (Common Gull, Sea Gull)
Semiplume or soft body contour feather

Ring-billed Gull (Common Gull, Sea Gull)

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Charadriiformes, Family: Laridae, Genus: Larus, Species: L. delawarensis

Family: Laridae (Gulls, Terns, and Skimmers)

Shape
Symmetrical vane, softly rounded tip with loose, flowing barbs along the margins.
Size
Approximately 3 to 4 inches in length, consistent with a medium-sized body or flank feather for a gull of this species.
Rarity
Very Common
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Description

The Ring-billed Gull is a familiar, medium-sized white and gray gull with bright yellow legs and a distinctive black ring around its bill in adults. They are highly adaptable scavengers often seen soaring effortlessly or congregating in large flocks near water and human habitations.

Colour & Pattern

Pure white base transitioning to a soft, dusky gray or brownish-gray tip, typical of immature plumage or transitional body covert coloration.

Barb Structure

Mixed structure; the central upper vane has lightly interlocked pennaceous barbs, while the lower and marginal sections transition into loose, plumulaceous, down-like barbs without strong hooklets.

Texture & Surface

Soft, silky, and pliable texture with a matte surface, offering insulation rather than aerodynamic stiffness.

Key Features

Soft semiplume structure with a clean white body and a subtle dusky-gray tip.

Habitat

Found near lakes, rivers, coastlines, agricultural fields, parking lots, and urban landfills.

Geographic Range

Widespread across North America, breeding in the northern US and Canada, and wintering south to Mexico, Central America, and the Caribbean.

Ecological Role

Acts as an important scavenger and coastal predator, helping regulate organic waste and small aquatic organisms.

Similar Species

Herring Gull and California Gull, which tend to be larger and feature different tonal variations in body plumage.

Interesting Facts

Ring-billed Gulls are notoriously intelligent and opportunistic foragers, known to drop hard-shelled prey onto pavement to crack them open.

Condition Notes

Good condition with minor natural wear at the delicate tip.