Slender-billed Gull vs Silver Gull

In short

The Slender-billed Gull and Silver Gull can be distinguished by their bill shape and coloration. The Slender-billed Gull has a notably longer and more slender bill, while the Silver Gull's bill is shorter and more robust. Both species have similar plumage, but their bill differences are key for identification.

Identification tips

1. Bill Shape: Look for the longer, more slender bill of the Slender-billed Gull compared to the shorter, thicker bill of the Silver Gull. 2. Geographic Location: Consider the region; Slender-billed Gulls are found around the Mediterranean and parts of Asia, while Silver Gulls are in Australia. 3. Plumage Tone: Note any subtle differences in wing grey tones, although this is less reliable.

Size

Both species are similar in size, but the Slender-billed Gull may appear slightly more elongated due to its slender bill.

Plumage

Plumage is similar in both species, generally white with grey wings and black wingtips. However, the Slender-billed Gull may have a slightly paler grey on the wings.

Behaviour

Both species exhibit typical gull behavior, often seen foraging in groups and displaying opportunistic feeding habits.

Habitat

The Slender-billed Gull is typically found in coastal and inland waters around the Mediterranean and parts of Asia, while the Silver Gull is more common in Australia and nearby islands, often seen in urban areas.

Voice

Vocalizations are not a reliable distinguishing feature as both species have similar calls typical of gulls.