Restart Bird Identification Expert

What was the WING SHAPE of the Gull-like bird you saw in Delaware?



Cory's Shearwater: Large gray-brown shearwater, white underparts, pale yellow bill. Feeds at night on crustaceans and large sqiud it takes from the surface. Best identified by its relatively slow, languid flight compared to other shearwaters. Wings held downward. Soars on fixed wings if wind is up.
Black-vented Shearwater: Medium shearwater, brown-black upperparts, white underparts, brown mottling on sides of breast and flanks. Tail is dark. Eats fish, crustaceans, and squid. Quick low flight with short stiff wingbeats followed by glide. Soars in high winds.
Barolo Shearwater: Tiny shearwater, dark brown upperparts and white underparts; dark cap extends only to eye. Bill is short and black. Swims and dives for food, picks food off surface of water. Feeds on fish and squid. Flight is low, fast and straight, alternates rapid wing beats and banking glides. Formerly called the Little Shearwater. Name changed to Barolo Shearwater in 2014 by the American Ornithologist Union.
Leach's Storm-Petrel: This medium-sized petrel has a dark brown body and a white rump and under tail feathers. The wings are dark with a pale gray-brown bar on the upper wings. It has a long, dark forked tail, and a black bill, legs and feet. Its flight is bounding and erratic with frequent changes of direction and speed. It mainly feeds on fish, squid and shrimp. Sexes are similar. The Leach's Storm-Petrel now has two subspecies, the Townsend's Storm-Petrel and Ainley's Storm-Petrel. Split in 2016 by the American Ornithologist Union. Both are outside of North America.
Band-rumped Storm-Petrel: This is a black-brown storm-petrel with gray-brown wing bars and a conspicuous white band across the rump and large, slightly notched tail. It has a black bill, legs and feet. It has a buoyant, zigzag flight, alternating several rapid wing beats. It feeds on invertebrates, small vertebrates and sometimes carrion from the water's surface. The sexes are similar.
Magnificent Frigatebird: Large black seabird, orange throat patch inflates into a huge bright red-orange balloon when in courtship display. Long bill is gray, hooked. Wings are long and narrow. Tail is forked; legs and feet are dark gray. Eats fish, crustaceans, jellyfish. High soaring flight.
Northern Gannet: Very large seabird. White overall with black primaries and long pointed wings. Light buff-yellow wash on crown of head extending down nape may be visible. Bill, legs, and feet are gray. Dives for fish and squid. Alternates rapid wing beats with short glides. Soars to great heights.
Great Skua: Large, heavy-bodied seabird, prominent white patch in primary feathers. Body color ranges from a light bleached to dark brown, all have a cinammon wash that makes the bird look red-tinged. Strong direct flight with constant shallow wingbeats. Hugs wave contours or flies up to 150 feet. Great Skua was split into Great Skua and Brown Skua (not in North American range) by the American Ornithologist Union.
South Polar Skua Dark: This small, gull-like skua occurs in two color phases. Dark phase adult has a dark brown body with a large white patch at base of primaries visible in flight. Dark bill, thick and heavy; short, broad tail. Light phase adult has pale gray-brown head and underparts. Feeds on fish, krill and squid. Strong direct flight with shallow wing beats. Sexes are similar.
Pomarine Jaeger: The dar morph of this large jaeger is dark brown except for white patches near underwing tips and sides of under tail. Light morph has white neck, pale yellow collar, white lower breast, mottled breast band, sides. Thick bill, pale base, two long central feathers twisted vertically on tail. Diet includes fish and small birds. Strong steady flight with deep wing beats. Sexes are similar.
Ivory Gull: A pure white gull whose entire life is restricted to the edge of the floating pack ice. Legs dark, bill dusky with yellow tip. It eats fish, insects, lemmings and crustaceans, and is also an active scavenger. Bouyant, graceful flight. Often flies with feet trailing and dangling below.
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.
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.
Franklin's Gull: This medium-sized gull has a gray back and white underparts. It has a black head, white eye ring, orange bill with a black spot near the tip, and red-orange legs. The wings are short with white spotted black tips. It has a strong direct flight with deep wing beats. It feeds mostly on terrestrial and aquatic insects. The sexes are similar; males are slightly larger.
California Gull: This is a medium-sized gull with a white head and underparts, gray wings and black wing tips. The bill and legs are yellow, and it has a red eyering. It has a strong direct flight with deep wing beats. It feeds on worms, mice, other birds and their eggs, and garbage. The sexes are similar, but the males are usually larger than females, with a larger bill, head and tarsi.
Thayer's Gull: Large gull, gray upperparts, white head, tail, underparts. Bill is yellow with red spot near the end of the lower mandible. Wings are gray with white-spotted, dark gray tips. Legs are dark pink. Direct flight, strong, steady wing beats, soars on thermals or updrafts.
Sooty Tern: This medium-sized tern has long wings, a deeply forked tail, black crown, nape, and upperparts and a broad triangular white forehead patch. The underparts are white; upper tail is black with white outer edges. It has a direct flight with strong, shallow wing beats. It hovers before dipping for prey. It feeds on squid and fish. Sexes are similar.
Bridled Tern: Medium pelagic tern. Black crown, nape separated from gray-brown upperparts by whitish collar. Chevron-shaped white forehead patch extends behind eye. Long pointed wings and deeply forked tail. Whitish underparts; underwings have brown trailing edge. Black bill, legs.
Gull-billed Tern: Lightest North American tern. Black cap that extends below eyes, down nape; pale gray upperparts that are darker at the wingtips; short, stout black bill and black legs, feet; long wings with very long outer primaries. Direct flight with graceful, shallow wing beats.
Roseate Tern: White below with slight, variable pinkish cast visible in good light; pale gray above with black cap, nape and deeply forked tail that projects well beyond wingtips at rest. Bill mostly black with some red at base; legs and feet are red-orange. Graceful, direct flight.
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.
Sandwich Tern: This is the only medium-sized tern with a long slender black bill tipped with yellow. The upperparts are very pale gray, nearly white, and the underparts are white. The black crown has a short black crest, the white tail is deeply forked, and the legs and feet are black. It has a direct flight and hovers before diving for fish. Sexes are similar.
 
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