by Dennis Shirley
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General Information |
Gull Identification |
Immature Gulls |
Key to Adult Gulls |
Species List | |
Mew Gull (similar
species)
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![](../../birdsofutah/BirdsL-R/MewGullJB.jpg) |
Breeding Adult - unmarked yellow bill, gray mantle, tertial
fringes,
extensive white mirrors on black wing tips, pinkish legs
Photo by Jack Binch
©Jack Binch
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![](../../birdsofutah/BirdsL-R_2/MewGullKK3.jpg) |
Non-breeding Adult - gray-brown mottling on the head and neck,
extensive white mirrors in black wing tip (all seasons)
by Kent Keller
©Kent Keller
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![](../../birdsofutah/BirdsL-R_2/MewGullPH2.jpg) |
1st Winter Mew Gulls - softly
mottled with gray-brown above and below and show a variable
amount of pure medium-gray on the back , there is often a dark
smudge in front of eye.
Photo
by
Paul Higgins
©Paul Higgins
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![](../../birdsofutah/BirdsL-R_2/MewGullPH3.jpg) |
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1st Winter Mew - tail is mottled pale gray and has an indistinct
grayish-brown terminal band
by Paul Higgins ©Paul
Higgins
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Mew Gull
Similar Species
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Ring-billed Gull
- First-winter Ring-billed Gull but has whiter and more heavily spotted
underparts; the wing and tail patterns more
distinct; the bill is stouter (note that the European Mew Gull,
which occurs casually on East Coast, has slightly larger,
stouter bills more like Ring-bills.
2nd winter and adult Ring-billed Gulls have a paler gray
mantle, pale eyes, and a distinct black band on a pale bill. |
Thayer's
- Immature Thayer's Gulls are larger and have paler wing tips;
first-winter Thayer's Gull has an entirely black bill. |
California & Herring
- are much larger, with longer, heavier bills. |
![](http://www.utahbirds.org/birdsofutah/BirdsL-R_4/RingBilledGullTF3.jpg) |
1st winter Ring-billed -
under parts whiter and more heavily spotted , bill stouter
Photo
by Ted Fitzgerald ©Ted
Fitzgerald
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![](../../birdsofutah/BirdsL-R_3/RingBilledGullKK5.jpg) |
1st Winter Ring-billed
- wing and tail patterns more distinct, bill stouter than Mew.
by Kent Keller
©Kent R. Keller
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![](../../birdsofutah/BirdsL-R_4/MewGullJB1.jpg) |
Winter
Adult Ring-billed (in front) - is
larger, has ring on bill, lighter mantle,
less distinct tertial fringes, and the Mew Gull (behind) has a
small slender unmarked bill
and more extensive white in the wing tips..
Photo
by Jack Binch
©Jack Binch
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![](../../hotlinephotos/MewGullJK3.jpg) |
Winter Adult Mew Gulls -
has a more prominent white tertial fringes (white crescents)
than does the Ring-billed Gull..
by Josh Kreitzer
©Joshua Kreitzer
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![](../../birdsofutah/BirdsS-Z_4/ThayersGullRY1.jpg) |
1st Year Thayer's
- is larger, has paler wing tips and entirely black bill
by Richard Young
©Richard B. Young
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