Herring Gull vs Iceland Gull

In short

Herring Gull and Iceland Gull can be challenging to differentiate, especially in winter plumage. The Herring Gull is generally larger with a heavier bill, while the Iceland Gull is smaller and more delicate. Key differences are found in their wing patterns and overall size.

Identification tips

• Size and structure: Look for the larger size and heavier bill of the Herring Gull.
• Wing patterns: Check for the black wingtips with white 'mirrors' in Herring Gulls versus the pale wingtips of Iceland Gulls.
• Mantle color: Herring Gulls have a darker gray mantle compared to the paler gray of Iceland Gulls.
• Seasonal variation: Be cautious in winter when plumage differences can be subtle.

Size

Herring Gull is larger and bulkier compared to the more petite Iceland Gull.

Plumage

Herring Gulls typically have darker gray mantles and more extensive black on the wingtips with white 'mirrors'. Iceland Gulls have a paler gray mantle and lack the black wingtips, showing more white in the primaries.

Behaviour

Both species exhibit similar gull behaviors, such as scavenging and foraging in groups, with no significant behavioral differences noted.

Habitat

Herring Gulls are more widespread and can be found in a variety of coastal and inland habitats. Iceland Gulls are more often associated with Arctic regions and are less common in urban environments.

Voice

Both species have similar calls, typical of large gulls, with no distinct vocal differences noted.