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Gulls, Terns, and Skimmers

Gulls, Terns, and Skimmers

50 Bird Species
Aleutian Tern

Aleutian Tern

A slender, gray tern of coastal Alaska. Alternate Adult has gray back, wings, and underparts, forked white tail, white face, black cap and eyeline, white forehead, thin black bill, and black legs. Basic Adult has dark primaries, white underparts, blackish smudge on shoulder, and white head with black more...

Length: 30 cm Wingspan: 74 cm

Arctic Tern

Arctic Tern

One of several small white terns that do not attain full adult alternate plumage until at least their third summer (three years after hatch year), this species is slightly smaller, shorter-legged, and shorter-billed than similar Common, Forster's and Roseate terns. Alternate adult has gray back and w more...

Length: 30 cm Wingspan: 78 cm

Belcher's Gull

Belcher's Gull

A stocky, medium-sized, four-year gull. Relatively long yellow legs and long, straight-edged, yellow bill with black ring and red tip. Dark eye. Adult: White underparts; slaty-black upperparts. Nonbreeding are dark-hooded with white eye arks. White head in breeding plumage contrasts with smoky-gray w more...

Length: 51 cm Wingspan: 124 cm

Black Noddy

Black Noddy

A dark, tern-like bird, rare on Texas coast and Dry Tortugas in Florida. Adult, unusual in North America, is black with white cap, slender black bill, and short black legs. Juveniles and immatures are entirely dark with sharply contrasting white cap and pale wing coverts. Brown Noddy is browner overa more...

Length: 34 cm Wingspan: 76 cm

Black Skimmer

Black Skimmer

A distinctive coastal bird of Eastern and Southern North America. Adult is tern-like, with long wings, short legs, and short neck. Back and wings are black, underparts white. Head is white with black cap and, in alternate plumage, black nape. Unique bill is long and relatively thick vertically, while more...

Length: 46 cm Wingspan: 112 cm

Black Tern

Black Tern

A small, dark tern. Flight is buoyant with deep slashing wingstrokes. Alternate Adult has blackish body, gray wings reaching well beyond short tail, white vent, short black legs, and sharp, slender bill. Basic Adult is mostly white (may be mistaken for a small gull), retaining gray wings and back, wi more...

Length: 25 cm Wingspan: 61 cm

Black-headed Gull

Black-headed Gull

Despite the name, the hood of this gull is actually chocolate brown. Black-headed Gull is similar to Bonaparte's Gull, with which it often associates, but is larger, with a heavier bill. In all plumages, the undersides of the primaries are dark. Alternate Adult: The mantle is pale gray. The primaries more...

Length: 38 cm Wingspan: 90 cm

Black-legged Kittiwake

Black-legged Kittiwake

This smallish gull is short-legged and short-billed. At rest, the tail is slightly notched. Alternate Adult: Medium gray mantle, with all-white head, tail, and underparts. The legs are short and black. Bill is all yellow. At close range, note the red eye ring and gape. Basic Adult: Blackish spot on a more...

Length: 38 cm Wingspan: 93 cm

Black-tailed Gull

Black-tailed Gull

This Asian species is one of the few gulls that shows black on the tail as an adult. Distinguished in all plumages by its long thin bill with no gonydeal expansion. Alternate Adult: The mantle is dark gray. The head and underparts are white. The tail has a broad black band, completely edged in white. more...

Length: 46 cm Wingspan: 119 cm

Bonaparte's Gull

Bonaparte's Gull

This small gull is recognized in all plumages by the thin all-black bill, and in flight by the white wedge on the leading edge of the upper surface of the outer wing, and the black trailing edge of the primaries. The underside of the wing is very pale gray, fading to white on the primaries. The upper more...

Length: 30 cm Wingspan: 80 cm

Bridled Tern

Bridled Tern

A slender, dark-backed tern, breeds in the Florida Keys. Alternate Adult has black wings, dark gray back, forked tail extending past wings, gray stripe down center of spread tail, white underparts, black legs, black cap and eyeline, white forehead extending past eye, and thin black bill. Basic Adult more...

Length: 39 cm Wingspan: 76 cm

Brown Noddy

Brown Noddy

A dark, tern-like bird, breeds on Dry Tortugas in Florida. Adult is dark brown overall with white forehead, long and stout black bill, and short black legs. Juveniles and immatures are entirely dark brown with white forehead and pale wing coverts. Sexes are similar. Black Noddy is black overall with more...

Length: 39 cm Wingspan: 81 cm

California Gull

California Gull

A medium-sized, long-winged four-year gull of Western North America. There are two subspecies, the more northerly and interior breeding "albertaensis," which is larger and tends to be paler above as an adult and the more southerly and coastal breeding "californicus," which averages smaller and darker more...

Length: 53 cm Wingspan: 137 cm

Caspian Tern

Caspian Tern

A large, bulky, broad-winged tern. At a distance, this species may be suggestive of a gull due to broad wings and heavy flight. Alternate Adult: Silvery-gray wings and back, dark wingtips, short, shallow-forked white tail, white underparts, black legs, black cap, and thick, dark red bill with a dusky more...

Length: 53 cm Wingspan: 127 cm

Common Tern

Common Tern

This species is one of several small white terns that do not attain a definitive alternate plumage until at least their third spring (nearly three years after hatch date). Alternate Adult has gray back and upper wing surface, pale gray underparts, forked tail shorter than folded wings, white face, bl more...

Length: 31 cm Wingspan: 76 cm

Elegant Tern

Elegant Tern

A mid-sized, streamlined, narrow-winged, white and gray tern with a black crown and crest and a long drooping orange bill. Underparts are entirely white in all plumages and age classes. Legs are black in adults and yellow in juveniles. Sexes are similar. Alternate Adult has light gray wings and back, more...

Length: 43 cm Wingspan: 86 cm

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  • Aleutian Tern

    Aleutian Tern

    9 Photographs
  • Arctic Tern

    Arctic Tern

    18 Photographs
  • Belcher's Gull

    Belcher's Gull

    1 Photograph
  • Black Noddy

    Black Noddy

    1 Photograph
  • Black Skimmer

    Black Skimmer

    11 Photographs
  • Black Tern

    Black Tern

    17 Photographs
  • Black-headed Gull

    Black-headed Gull

    10 Photographs
  • Black-legged Kittiwake

    Black-legged Kittiwake

    14 Photographs
  • Black-tailed Gull

    Black-tailed Gull

    12 Photographs
  • Bonaparte's Gull

    Bonaparte's Gull

    24 Photographs
  • Bridled Tern

    Bridled Tern

    1 Photograph
  • Brown Noddy

    Brown Noddy

    5 Photographs
  • California Gull

    California Gull

    37 Photographs
  • Caspian Tern

    Caspian Tern

    17 Photographs
  • Common Tern

    Common Tern

    16 Photographs
  • Elegant Tern

    Elegant Tern

    22 Photographs

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Non-vegetated-areas-sm

Non-vegetated Areas

0 species

Salt-water-sm

Salt Water

47 species

Aleutian Tern

Aleutian Tern

Onychoprion aleuticus

Open Ocean, Estuaries and Bays, Beaches
Arctic Tern

Arctic Tern

Sterna paradisaea

Open Ocean, Inshore Waters, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Open Country and Grasslands
Belcher's Gull

Belcher's Gull

Larus belcheri

Open Ocean, Inshore Waters, Rocky Shores, Beaches, Tidal Mudflats and Shallows
Black Noddy

Black Noddy

Anous minutus

Inshore Waters, Coastal Cliffs, Beaches
Black Skimmer

Black Skimmer

Rynchops niger

Estuaries and Bays, Inshore Waters, Beaches, Saltmarshes
Black Tern

Black Tern

Chlidonias niger

Open Ocean, Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Black-headed Gull

Black-headed Gull

Chroicocephalus ridibundus

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Black-legged Kittiwake

Black-legged Kittiwake

Rissa tridactyla

Open Ocean, Inshore Waters, Coastal Cliffs, Dams, Lakes Resevoirs
Black-tailed Gull

Black-tailed Gull

Larus crassirostris

Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Urban Landscapes, Suburban/residential Landscapes
Bonaparte's Gull

Bonaparte's Gull

Chroicocephalus philadelphia

Estuaries and Bays, Inshore Waters, Saltmarshes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Boreal Forest
Bridled Tern

Bridled Tern

Onychoprion anaethetus

Open Ocean, Inshore Waters, Rocky Shores, Beaches, Coastal Dunes
Brown Noddy

Brown Noddy

Anous stolidus

Open Ocean, Inshore Waters, Coastal Cliffs
California Gull

California Gull

Larus californicus

Open Ocean, Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Caspian Tern

Caspian Tern

Hydroprogne caspia

Estuaries and Bays, Inshore Waters, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Common Tern

Common Tern

Sterna hirundo

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Elegant Tern

Elegant Tern

Thalasseus elegans

Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Tidal Mudflats and Shallows
Forster's Tern

Forster's Tern

Sterna forsteri

Beaches, Tidal Mudflats and Shallows, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Franklin's Gull

Franklin's Gull

Leucophaeus pipixcan

Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous Gull

Glaucous Gull

Larus hyperboreus

Open Ocean, Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous-winged Gull

Glaucous-winged Gull

Larus glaucescens

Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Gray-hooded Gull

Gray-hooded Gull

Chroicocephalus cirrocephalus

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Saltmarshes
Great Black-backed Gull

Great Black-backed Gull

Larus marinus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Coastal Dunes, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Dams, Lakes Resevoirs
Gull-billed Tern

Gull-billed Tern

Gelochelidon nilotica

Estuaries and Bays, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Fresh Water Marshes
Heermann's Gull

Heermann's Gull

Larus heermanni

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores
Herring Gull

Herring Gull

Larus argentatus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Iceland Gull

Iceland Gull

Larus glaucoides

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Sewage Treatment Plants, Dams, Lakes Resevoirs
Ivory Gull

Ivory Gull

Pagophila eburnea

Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches
Kelp Gull

Kelp Gull

Larus dominicanus

Estuaries and Bays, Inshore Waters, Beaches, Lakes Resevoirs
Laughing Gull

Laughing Gull

Leucophaeus atricilla

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Least Tern

Least Tern

Sternula antillarum

Estuaries and Bays, Beaches, Fresh Water Marshes, Ponds and Rivers
Lesser Black-backed Gull

Lesser Black-backed Gull

Larus fuscus

Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Little Gull

Little Gull

Hydrocoloeus minutus

Open Ocean, Inshore Waters, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Mew Gull

Mew Gull

Larus canus

Estuaries and Bays, Tidal Mudflats and Shallows, Urban Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Red-legged Kittiwake

Red-legged Kittiwake

Rissa brevirostris

Open Ocean, Inshore Waters, Coastal Cliffs
Ring-billed Gull

Ring-billed Gull

Larus delawarensis

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Roseate Tern

Roseate Tern

Sterna dougallii

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Tidal Mudflats and Shallows
Ross's Gull

Ross's Gull

Rhodostethia rosea

Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Dams, Lakes Resevoirs
Royal Tern

Royal Tern

Thalasseus maximus

Open Ocean, Estuaries and Bays, Inshore Waters, Beaches
Sabine's Gull

Sabine's Gull

Xema sabini

Open Ocean, Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Sandwich Tern

Sandwich Tern

Thalasseus sandvicensis

Estuaries and Bays, Inshore Waters, Beaches, Saltmarshes
Slaty-backed Gull

Slaty-backed Gull

Larus schistisagus

Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Sooty Tern

Sooty Tern

Onychoprion fuscatus

Open Ocean, Inshore Waters
Swallow-tailed Gull

Swallow-tailed Gull

Creagrus furcatus

Open Ocean
Thayer's Gull

Thayer's Gull

Larus thayeri

Open Ocean, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Western Gull

Western Gull

Larus occidentalis

Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Ponds and Rivers
Yellow-footed Gull

Yellow-footed Gull

Larus livens

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows
Yellow-legged Gull

Yellow-legged Gull

Larus michahellis

Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches
Human-altered-areas-sm

Human-altered Areas

21 species

Black-headed Gull

Black-headed Gull

Chroicocephalus ridibundus

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Black-legged Kittiwake

Black-legged Kittiwake

Rissa tridactyla

Open Ocean, Inshore Waters, Coastal Cliffs, Dams, Lakes Resevoirs
Black-tailed Gull

Black-tailed Gull

Larus crassirostris

Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Urban Landscapes, Suburban/residential Landscapes
Bonaparte's Gull

Bonaparte's Gull

Chroicocephalus philadelphia

Estuaries and Bays, Inshore Waters, Saltmarshes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Boreal Forest
California Gull

California Gull

Larus californicus

Open Ocean, Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Franklin's Gull

Franklin's Gull

Leucophaeus pipixcan

Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous Gull

Glaucous Gull

Larus hyperboreus

Open Ocean, Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous-winged Gull

Glaucous-winged Gull

Larus glaucescens

Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Great Black-backed Gull

Great Black-backed Gull

Larus marinus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Coastal Dunes, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Dams, Lakes Resevoirs
Gull-billed Tern

Gull-billed Tern

Gelochelidon nilotica

Estuaries and Bays, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Fresh Water Marshes
Herring Gull

Herring Gull

Larus argentatus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Iceland Gull

Iceland Gull

Larus glaucoides

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Sewage Treatment Plants, Dams, Lakes Resevoirs
Lesser Black-backed Gull

Lesser Black-backed Gull

Larus fuscus

Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Little Gull

Little Gull

Hydrocoloeus minutus

Open Ocean, Inshore Waters, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Mew Gull

Mew Gull

Larus canus

Estuaries and Bays, Tidal Mudflats and Shallows, Urban Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Ring-billed Gull

Ring-billed Gull

Larus delawarensis

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Ross's Gull

Ross's Gull

Rhodostethia rosea

Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Dams, Lakes Resevoirs
Sabine's Gull

Sabine's Gull

Xema sabini

Open Ocean, Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Slaty-backed Gull

Slaty-backed Gull

Larus schistisagus

Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Thayer's Gull

Thayer's Gull

Larus thayeri

Open Ocean, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Western Gull

Western Gull

Larus occidentalis

Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Ponds and Rivers
Fresh-water-sm

Fresh Water

31 species

Arctic Tern

Arctic Tern

Sterna paradisaea

Open Ocean, Inshore Waters, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Open Country and Grasslands
Black Tern

Black Tern

Chlidonias niger

Open Ocean, Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Black-headed Gull

Black-headed Gull

Chroicocephalus ridibundus

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Black-legged Kittiwake

Black-legged Kittiwake

Rissa tridactyla

Open Ocean, Inshore Waters, Coastal Cliffs, Dams, Lakes Resevoirs
Bonaparte's Gull

Bonaparte's Gull

Chroicocephalus philadelphia

Estuaries and Bays, Inshore Waters, Saltmarshes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Boreal Forest
California Gull

California Gull

Larus californicus

Open Ocean, Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Caspian Tern

Caspian Tern

Hydroprogne caspia

Estuaries and Bays, Inshore Waters, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers
Common Tern

Common Tern

Sterna hirundo

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Forster's Tern

Forster's Tern

Sterna forsteri

Beaches, Tidal Mudflats and Shallows, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Franklin's Gull

Franklin's Gull

Leucophaeus pipixcan

Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous Gull

Glaucous Gull

Larus hyperboreus

Open Ocean, Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous-winged Gull

Glaucous-winged Gull

Larus glaucescens

Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Great Black-backed Gull

Great Black-backed Gull

Larus marinus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Coastal Dunes, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Dams, Lakes Resevoirs
Gull-billed Tern

Gull-billed Tern

Gelochelidon nilotica

Estuaries and Bays, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Fresh Water Marshes
Herring Gull

Herring Gull

Larus argentatus

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Iceland Gull

Iceland Gull

Larus glaucoides

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Coastal Cliffs, Beaches, Sewage Treatment Plants, Dams, Lakes Resevoirs
Kelp Gull

Kelp Gull

Larus dominicanus

Estuaries and Bays, Inshore Waters, Beaches, Lakes Resevoirs
Large-billed Tern

Large-billed Tern

Phaetusa simplex

Lakes Resevoirs, Ponds and Rivers
Laughing Gull

Laughing Gull

Leucophaeus atricilla

Open Ocean, Estuaries and Bays, Inshore Waters, Rocky Shores, Beaches, Saltmarshes, Fresh Water Marshes, Lakes Resevoirs
Least Tern

Least Tern

Sternula antillarum

Estuaries and Bays, Beaches, Fresh Water Marshes, Ponds and Rivers
Lesser Black-backed Gull

Lesser Black-backed Gull

Larus fuscus

Estuaries and Bays, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Little Gull

Little Gull

Hydrocoloeus minutus

Open Ocean, Inshore Waters, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Mew Gull

Mew Gull

Larus canus

Estuaries and Bays, Tidal Mudflats and Shallows, Urban Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Ring-billed Gull

Ring-billed Gull

Larus delawarensis

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Saltmarshes, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs
Ross's Gull

Ross's Gull

Rhodostethia rosea

Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Dams, Lakes Resevoirs
Sabine's Gull

Sabine's Gull

Xema sabini

Open Ocean, Estuaries and Bays, Inshore Waters, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs
Slaty-backed Gull

Slaty-backed Gull

Larus schistisagus

Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Lakes Resevoirs
Thayer's Gull

Thayer's Gull

Larus thayeri

Open Ocean, Inshore Waters, Beaches, Urban Landscapes, Sewage Treatment Plants, Dams, Lakes Resevoirs
Western Gull

Western Gull

Larus occidentalis

Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Ponds and Rivers
Whiskered Tern

Whiskered Tern

Chlidonias hybrida

Fresh Water Marshes
White-winged Tern

White-winged Tern

Chlidonias leucopterus

Fresh Water Marshes
Grassland-and-scrubland-sm

Grassland and Scrubland

4 species

Arctic Tern

Arctic Tern

Sterna paradisaea

Open Ocean, Inshore Waters, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Open Country and Grasslands
Black-headed Gull

Black-headed Gull

Chroicocephalus ridibundus

Estuaries and Bays, Inshore Waters, Beaches, Tidal Mudflats and Shallows, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Franklin's Gull

Franklin's Gull

Leucophaeus pipixcan

Estuaries and Bays, Tidal Mudflats and Shallows, Saltmarshes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Glaucous Gull

Glaucous Gull

Larus hyperboreus

Open Ocean, Estuaries and Bays, Inshore Waters, Coastal Cliffs, Beaches, Urban Landscapes, Suburban/residential Landscapes, Sewage Treatment Plants, Fresh Water Marshes, Lakes Resevoirs, Open Country and Grasslands
Forest-and-woodlands-sm

Forest and Woodlands

1 species

Bonaparte's Gull

Bonaparte's Gull

Chroicocephalus philadelphia

Estuaries and Bays, Inshore Waters, Saltmarshes, Sewage Treatment Plants, Dams, Fresh Water Marshes, Lakes Resevoirs, Ponds and Rivers, Boreal Forest
50
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