European Herring Gull - Taxonomy

Taxonomy

The taxonomy of the Herring Gull / Lesser Black-backed Gull complex is very complicated, different authorities recognising between two and eight species.

This group has a ring distribution around the northern hemisphere. Differences between adjacent forms in this ring are fairly small, but by the time the circuit is completed, the end members, Herring Gull and Lesser Black-backed Gull, are clearly different species.

The Association of European Rarities Committees recognises six species:

• European Herring Gull, Larus argentatus
• American Herring Gull, Larus smithsonianus
• Caspian Gull, Larus cachinnans
• Yellow-legged Gull, Larus michahellis
• Vega Gull, Larus vegae
• Armenian Gull, Larus armenicus