Lesser Black-backed Gull (Graellsii subspecies), also known as British Lesser Black-backed Gull

This feather belongs to the Lesser Black-backed Gull, a sophisticated flyer known for its dark slate-grey mantle and yellow legs. The feather shows the classic contrast between the dark grey inner portion and the pitch-black distal end. These birds are slightly smaller than the Herring Gull but are more aggressive and migratory.

Bicolor pattern with a slate-grey/charcoal base transitioning sharply into a solid black terminal band. In Larus fuscus, the grey is notably darker than in Herring Gulls. No white apical spot (mirrors) visible, which is typical for inner feathers.

Tightly interlocked pennaceous barbs throughout most of the vane for flight aerodynamics, becoming plumulaceous (fluffy) toward the base Calamus. Barbules are intact with high hooklet density.

Smooth, glossy, and highly waterproof surface. The vane is stiff and resilient to withstand the air pressure of soaring flight. Matte finish on the underside with a glassy upper surface.

Contrasting light rachis, deep slate-grey coloration (darker than Herring Gull), and the solid black tip without white spotting (as seen in larger primaries).

Coastal shores, harbors, estuaries, and increasingly inland sites such as reservoirs, agricultural fields, and urban landfills or rooftops for nesting.

Common throughout Europe and the UK; migratory populations winter in Africa and increasingly sightings occur along the Atlantic coast of North America.

Generalist predator and scavenger. They play a vital role in cleaning up coastal debris but can impact the populations of other ground-nesting seabirds by predating eggs.

Great Black-backed Gull (larger, darker black), Herring Gull (much lighter silver-grey), and Yellow-legged Gull (intermediate grey, often indistinguishable from single feathers).

Despite being called 'Black-backed', their backs are actually dark grey. They are notorious kleptoparasites, meaning they frequently steal food from other birds in mid-flight.

Good to Excellent condition. The edges show very minor wear, suggesting it was recently molted. No fault bars or significant parasitism are visible.