Ring-billed Gull vs Herring Gull

In short

The Ring-billed Gull and Herring Gull can be distinguished primarily by their bill markings and size. The Ring-billed Gull has a distinct black ring around its bill, while the Herring Gull's bill is yellow with a red spot near the tip. Size is also a key factor, with the Herring Gull being notably larger.

Identification tips

1. Look for the black ring on the bill of the Ring-billed Gull, absent in the Herring Gull. 2. Compare size: Herring Gulls are larger and bulkier. 3. Check the bill: Herring Gulls have a red spot on the lower mandible. 4. Observe habitat: Ring-billed Gulls are more likely inland. 5. Listen for calls: Herring Gulls have a deeper call.

Size

The Herring Gull is larger than the Ring-billed Gull, with a bulkier build and broader wings.

Plumage

Both species have similar gray and white plumage, but the Ring-billed Gull has a more delicate appearance with a finer bill. The Herring Gull has a more robust and heavier bill. In adults, the Ring-billed Gull's wingtips are black with white spots, while the Herring Gull's wingtips are also black but with larger white mirrors.

Behaviour

Both species exhibit similar behaviors, often seen scavenging in urban areas or following boats. However, the Ring-billed Gull is more commonly found inland compared to the Herring Gull.

Habitat

The Ring-billed Gull is often found in inland areas, such as lakes and rivers, while the Herring Gull is more coastal, though it can also be found inland, especially in winter.

Voice

Both species have similar harsh calls, but the Herring Gull's call is deeper and more resonant.