Great black-backed gull Larus marinus

Identification Tips:

Adult alternate:

Adult basic:




Similar species:

Adults and subadults older than one year are recognizable by their black mantle. All other gulls (including Lesser Black-backed Gulls) are paler backed. First-year birds are similar to other gulls in their first winter, but have very pale heads and breasts and strongly checkered upperparts, unlike any other species. First-year Lesser Black-backed Gulls are perhaps most similar in that they have white rumps and pale heads and breasts, but are very differently proportioned being smaller-billed and much longer-winged, and even smaller in size than a Herring Gull.