large white-headed gulls

genus Larus

Member of gulls (subfamily Larinae)
shorebirds and allies (order Charadriiformes)
waterbirds
birds (class Aves)
animals (kingdom Animalia)

Caution: There are other wild species of this genus not yet included in this guide.

heermann’s gull
Larus heermanni

heermann’s gull
Larus heermanni

red bill
dark eye
black legs and feet
light gray belly

western gull
Larus occidentalis

western gull
Larus occidentalis

yellow bill with red spot near lower tip
dark eye
pink legs and feet
white belly
heavier bill than california gull

california gull
Larus californicus

california gull
Larus californicus

Caution: ID unsure

yellow bill with red spot near lower tip
dark eye
cream/gray legs and feet
white belly
lighter bill than western gull

ring-billed gull
Larus delawarensis

ring-billed gull
Larus delawarensis

yellow bill with black ring near both tips

ring can occasionally cover the tips of the bills

pale eye
yellow legs and feet
white belly

4 observed taxons / 1 key

Chris’s observations: 21 (13 are research grade)

Locations:

Coyote Hills RP: 5
Point Lobos SP: 5
Golden Gate National Recreation Area: 4
Monterey Bay Coastal Trail: 4
McNee Ranch / Montara Mountain SP
Santa Clara Central Park
Wilder Ranch SP

Months:

Jan.: 1
Feb.: 1
Mar.: 0
Apr.: 2
May: 0
Jun.: 0
Jul.: 3
Aug.: 2
Sep.: 7
Oct.: 5

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Taxon info: iNaturalist

Bay Area species: iNaturalist