Feather & Bird Encyclopedia
Search and identify feathers by species — with feather type, plumage, colours, size, habitat, and how to tell them apart in the field.
California Gull
A medium-large gull of the American West, the California Gull shows medium gray back feathers and dark eyes, and is notable historically for its role in protecting early Utah crops from insect swarms.
seabird
Herring Gull
A familiar large gull of the Old World, the Herring Gull shows pale gray mantle feathers, black-and-white patterned wingtips, and pink legs, taking several years to reach its fully patterned adult plumage.
seabird
Yellow-legged Gull
A large, robust gull of Mediterranean and western European coasts, closely resembling other large white-headed gulls but distinguished by bright yellow legs and a somewhat darker mantle.
seabird
Glaucous-winged Gull
A common gull of the North Pacific coast, the Glaucous-winged Gull shows pale gray wingtip feathers with little or no black, differing subtly from most other large gulls, and frequently hybridizes with related species.
seabird
Iceland Gull
A pale, gentle-faced gull of the North Atlantic Arctic, the Iceland Gull shows pale gray back feathers and white to very pale wingtips, smaller and more delicately built than the similar Glaucous Gull.
seabird
Glaucous Gull
A massive, pale Arctic gull, the Glaucous Gull is unusual among large gulls for lacking black wingtips entirely, showing instead uniformly pale gray and white feathers well suited to its icy northern range.
seabird
Lesser Black-backed Gull
A medium-large gull of European waters with dark slate-gray to blackish mantle feathers and yellow legs, the Lesser Black-backed Gull has expanded its range widely and increasingly turns up well inland.
seabird
American Herring Gull
The North American counterpart to the Eurasian Herring Gull, the American Herring Gull shows very similar pale gray-and-white plumage with black wingtip spots, but with subtly darker gray tones and pinkish legs.
seabird
Great Black-backed Gull
The world's largest gull, the Great Black-backed Gull shows strikingly dark slate-black mantle feathers contrasting with a pure white head and body, and is a powerful predator as well as scavenger along North Atlantic coasts.
seabird
Royal Tern
One of the largest terns, approaching gull-like proportions, with a heavy orange bill and a shaggy black crest that is often reduced to a ragged crown patch outside the breeding season.
seabird
Caspian Tern
The largest tern in the world, approaching the size of some gulls, unmistakable for its massive deep red bill, heavy build, and loud, harsh call.
seabird
Bonaparte's Gull
A dainty, tern-like gull of the North American boreal forest, notable as one of the few gulls that nests in trees, and identifiable by its crisp black hood and bright white wing wedge.
seabird
Little Gull
The smallest gull in the world, a delicate Eurasian species with rounded wings, a buoyant tern-like flight, and strikingly dark underwings that flash as it wheels over the water.
seabird
Gull-billed Tern
A stocky, pale tern known for its short, thick, gull-like black bill rather than the slender dagger bill typical of most terns.
seabird
Mottled Duck
A non-migratory dabbling duck of Gulf Coast and Florida wetlands that looks much like a female Mallard, best told apart by its plain, unstreaked pale throat.
waterfowl
Boat-tailed Grackle
The Boat-tailed Grackle is a large coastal grackle with a long, distinctively keeled tail, males glossy black with iridescence and females a much smaller warm brown, common along Atlantic and Gulf Coast marshes.
songbird
Horned Screamer
A large, turkey-sized waterbird of South American wetlands, unmistakable for the long, slender horn-like spine projecting from its forehead. Its blackish, white-speckled plumage and loud trumpeting calls carry across open marshland.
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