Restart Bird Identification Expert

What was the SIZE of the Gray Gull-like bird you saw in Idaho?



Long-tailed Jaeger: Smallest but most buoyant and graceful jaeger or skua, with gray upperparts, white breast and gray belly. Black cap covers eyes, crosses chin and ends at yellow nape. Upperwings are dark edged. Tail is gray with black edges and long black streamers. Legs are blue-gray and toes are webbed. Sexes are similar. Juvenile is heavily barred and spotted gray; has white patches on underwings, white throat, white belly and dark-tipped gray bill. Dark juvenile is darker overall; has gray throat and lacks white belly.
Black-legged Kittiwake: This is a medium-sized white gull with pale gray back and upperwings and black wing tips. The bill is yellow and the legs and feet are black. It has a swift, graceful flight, alternating several rapid shallow wing beats with a glide. Hovers over water before diving for prey at the surface. It feeds on marine invertebrates, plankton and fish. The sexes look very similar.
Sabine's Gull: Small gull with gray back and white nape, rump, and underparts. Hood is solid black and eye-ring is dark red. Bill is black with yellow tip; legs and feet are black. The upperwings are gray with black primaries and white secondaries. Tail is slightly forked when folded.
Little Gull: The smallest of all gulls, with pale gray upperparts and white nape, neck, breast, belly, and tail. Hood is black and extends onto upper neck. Underwings are dark. Bill is dark red with black tip. Legs and feet are red-orange. Strong direct flight with deep wing beats.
Ross's Gull: The pink gull of the high Arctic. Small gull, pale gray upperparts, gray-white nape, white neck with thin black collar, and white, wedge-shaped tail; underparts are variably pink. Black bill is very short; legs, feet are orange-red. Often feeds on mudflats like a wader.
Heermann's Gull: Medium-sized gull with gray underparts and dark gray upperparts. Head is white and bill is bright red with black tip. Tail is black and edged with white. Legs and feet are black. Dives into ocean to catch fish. Also steals and scavenges. Flight is bouyant and direct.
Mew Gull: Medium-sized gull with gray back and upperwings, and white head, neck, breast, and belly. Bill is bright yellow. Wings have white-spotted black tips; tail is white. Feet and legs are dull yellow. Graceful, bouyant flight. Undulating, with several rapid wingbeats and a pause.
Western Gull: This large gull has gray upperparts, white head, neck, tail and underparts, yellow eyes, a bright yellow bill with red spot near tip and pale pink legs and feet. It has gray upper wings, white-edged with white-spotted black tips. Diet includes fish, crabs, clams, eggs, carrion and garbage. It has a direct flight; strong, steady wing beats; soars on thermals. Sexes are similar.
Iceland Gull: Large, white gull, pale, pearl-gray back and upper wings. Bill is yellow, red spot at tip of lower mandible. Wing tips sometimes marked with pale to dark gray. White tail; legs and feet are pink. Direct flight with strong deep wing beats. Soars on thermals and updrafts. Thayer's Gull, formerly its own species is now a subspecies of the Iceland Gull.
Lesser Black-backed Gull: Medium-sized gull with dark gray back and wings. Head, neck and underparts are white. Rump and tail are white. Bill is yellow with red spot near tip. The wings have dark tips with white spots; legs and feet are yellow. Eyes are yellow with red orbital rings.
Slaty-backed Gull: This large gull has a slate-gray back, white head, belly, tail, and upper wings; dark outer primaries separated from mantle by row of white spots. Gray underside of primaries; broad white trailing edge to wings. It has pink legs and feet, yellow eyes with red orbital ring and a yellow bill with red spot near tip. Diet includes fish, crustaceans and insects. Sexes are similar.
Glaucous-winged Gull: This large gull has gray upperparts with white underparts, head and neck. The eyes are dark and the bill is yellow with a red spot on the lower mandible. The wings are gray with white edges and spots near the tips. The legs and feet are pink. It feeds on fish, small birds, or almost anything. It has a powerful direct flight and often soars on thermals. The sexes are similar.
Glaucous Gull: This large white gull has a pale gray back and yellow eyes. The bill is yellow with a red spot on the lower mandible. The wings are white-edged and white tipped; the legs and feet are pink. It is an active predator of seabird nesting colonies. Diet includes fish, insects and birds. It has slow steady wing beats and soars on thermals and updrafts. The sexes are similar.
Least Tern: This small tern has slate-gray upperparts, white underparts; crown and nape are black, and the forehead is white. Black leading edge of outer wing is conspicuous in flight. The tail is forked, and the bill and feet are yellow. It feeds on small fish and invertebrates. It has a fast smooth flight with rapid wing beats. Hovers briefly before dipping down to seize prey. Sexes are similar.
Arctic Tern: This is a medium-sized, slim tern with gray upperparts, black cap, a white rump and throat, and pale gray underparts. The tail is deeply forked and white with dark edged outer feathers. The bill is dark red. The legs and feet are red. It has a buoyant, graceful flight with steady wing beats. It feeds on small fish, crustaceans and insects. Both sexes are similar in appearance.
Thayer's Gull: Having had full species status since 1973, as of 2017, the AOU considers this gull to be a subspecies of the Iceland Gull and has lumped it there. To see this please jump to the Iceland Gull species account. New subspecies range maps for this bird will be available in the next iBird update at which time we will retire the Thayer’s Gull as it’s own species.
 
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