Ross's Gull vs Red-legged Kittiwake

In short

Ross's Gull and Red-legged Kittiwake are both small, Arctic gulls, but they can be distinguished by their leg color and tail shape. Ross's Gull has a wedge-shaped tail and pinkish legs, while the Red-legged Kittiwake has bright red legs and a square tail.

Identification tips

1. Leg Color: Look for bright red legs on Red-legged Kittiwake; Ross's Gull has pinkish legs. 2. Tail Shape: Ross's Gull has a wedge-shaped tail, while Red-legged Kittiwake's tail is square. 3. Plumage: In breeding season, Ross's Gull shows a pinkish wash on the underparts and a black collar. 4. Location: Consider the location; Ross's Gull is more likely near Arctic pack ice, while Red-legged Kittiwake is found around the Bering Sea.

Size

Both species are small gulls, but Ross's Gull is generally more delicate and slightly smaller than the Red-legged Kittiwake.

Plumage

Ross's Gull has a pale gray back and a distinctive pinkish wash on the underparts during breeding season, while the Red-legged Kittiwake has a more uniform gray back and lacks the pinkish hue. Both have white heads, but Ross's Gull has a black collar in breeding plumage.

Behaviour

Both species are pelagic and often seen flying over open water. Ross's Gull is known for its graceful flight with deep wingbeats, while Red-legged Kittiwake often associates with other kittiwakes.

Habitat

Ross's Gull is typically found in Arctic regions, often near pack ice, while Red-legged Kittiwake breeds on cliffs in the Bering Sea and winters at sea.

Voice

Vocalizations are not a primary distinguishing feature between these two species in the field.