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California Gull |
plumages |
similar
species |
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CS,UW - 4 year - Medium size (21") |
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*Eye color dark in
all plumages |
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Greenish/yellow
legs, Yellow bill with red spot (adult) |
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*Dark gray mantle
(adult), White head (adult), brown streaked (winter adult) |
State Bird of Utah
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 |
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Adult (9 Feb 2003 Farmington Bay)
by Jack Binch ŠJack Binch
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Ring-billed Gull |
plumages |
similar
species |
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CW,US - 3 year - Medium size (18") |
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*Yellow bill with
black ring |
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*Pale yellowish eye, yellowish legs (adult),
gray/blue legs (winter adult) |
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*Pale gray mantle (adult), head brown streaked
(winter) |
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Franklin's Gull |
plumages |
similar
species |
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CS - 3 year - Small size (15") |
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*Black hood (No winter records for Utah) |
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Broken white eye crescents, Pink tint to breast |
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Bonaparte's Gull |
plumages |
similar
species |
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FT - 2 year - Small size (13") |
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Black hood as adult, *black ear spot in winter |
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*White leading edge of outer wing |
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Tern like in flight and feeding habits |
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Herring Gull |
plumages |
similar
species |
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UW - 4 year - Large size (25") |
|
Variable subspecies |
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Pale gray mantle (adult), brown overall as
immature |
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*Pink legs, head brown streaked (winter adult) |
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*Yellowish eye, bill (red spot) (adult), black
tipped (immature) |
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Sabine's Gull |
plumages |
similar
species |
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RT - 2/3 year - Small size (14") |
|
*Striking black, white, gray (brown) wing
triangle pattern |
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Gray/brown body as immature |
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Forked tail |
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Pelagic species, long distance migrant |
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Thayer's Gull |
plumages |
similar
species |
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RW - 4 year - Large size (23") |
|
Like Herring - variable |
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*Dark eye, pink legs, thinner bill, rounded head |
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Pale brown juvenile |
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Glaucous Gull |
plumages |
similar
species |
|
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RW - 4 year - Large size (27"), heavy bodied |
|
*Very pale plumage (no black) |
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Pink legs, juvenile distinct black tipped -
flesh-colored bill |
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Glaucous-winged Gull |
plumages |
similar
species |
|
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RW - 4 year - Large size (26") |
|
Variable plumages - pale (no black) |
|
*Mantle pale gray, legs pink, eye dark |
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*Bill entirely black as immature, yellow in
adults |
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*Immature uniformly brownish/gray, pale |
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Mew
Gull |
plumages |
similar
species |
|
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OW - 3 year - Medium size (16") |
|
*Thin all yellow bill (adult) |
|
Immatures similar to Ring-billed but underwing
coverts brownish |
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*Adults dark gray mantle, dark eye |
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Black-legged Kittiwake |
plumages |
similar
species |
|
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A - 2/3 year - Medium size (17") |
|
Winter only |
|
*yellow bill, smudgy ear spot, black tipped
wings, black legs, gray mantle |
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*Immature - dark "W" across wings |
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Little Gull |
plumages |
similar
species |
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A - 2 year - *Smallest size (11") |
|
*Black ear spot, wings black underside, white
rear edge, red legs |
|
Often with Bonaparte's Gulls |
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Heermann's Gull |
plumages |
similar
species |
|
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A - 3 year - Medium size (19") |
|
*Dark plumage (immiture), black legs |
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Red bill, grayish breast, whtish head as Adult |
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Yellow-footed Gull |
plumages |
similar
species |
|
|
A - 3/4 year - Large size (27") |
|
*Yellow legs and feet |
|
Utah records (2) - summer only |
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Western Gull |
plumages |
similar
species |
|
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A - 4 year - Large size (25") |
|
*Adult - white head, dark gray/blackish back,
pink legs, very large yellow bill/red spot |
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Immatures - dark brown, bill all black |
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Variable - Hybridizes commonly with Glaucous-winged
Gull. |
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Iceland Gull |
plumages |
similar
species |
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A - 4 year - Large size (22") |
|
Variable - Smaller version of Glaucous |
|
*Very pale immature, all black bill, pale yellow
eye |
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Lesser Black-backed Gull |
plumages |
similar
species |
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A - 4 year - Large size (medium +) (20-21") |
|
*Blackish back as adult, yellow legs |
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*Immature - black bill, fleshy legs, pale head,
dark prijmary and secondary wing feathers |
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