Armenian Gull vs Lesser Black-backed Gull

In short

The Armenian Gull and the Lesser Black-backed Gull can be distinguished by their size and plumage details. The Armenian Gull is generally bulkier with a more robust bill, while the Lesser Black-backed Gull has a darker mantle and more slender appearance. Observing these features in combination with habitat and behavior can aid in identification.

Identification tips

• Size and Structure: Armenian Gull is bulkier with a more robust bill.
• Plumage: Look for the darker mantle of the Lesser Black-backed Gull.
• Habitat: Consider the location; Armenian Gulls are more likely inland, while Lesser Black-backed Gulls are often coastal.
• Seasonal Variation: Be aware of plumage changes in different seasons, especially in nonbreeding plumage.

Size

Armenian Gull is slightly larger and bulkier compared to the more slender Lesser Black-backed Gull.

Plumage

Armenian Gull has a paler mantle compared to the darker slate-gray mantle of the Lesser Black-backed Gull. The Armenian Gull also shows a more prominent white trailing edge on the wings.

Behaviour

Both species exhibit similar gull behaviors, such as scavenging and loafing near water bodies. No distinct behavioral differences are noted.

Habitat

Armenian Gull is often found in inland water bodies, while Lesser Black-backed Gull is more coastal, though it can also be found inland.

Voice

Vocalizations are similar and not a reliable distinguishing feature in the field.