Bill Color
|
|
|
Totally Black
|
Black-tipped/ringed
(some lighter color at base or along
length)
|
|
Franklin's
|
California |
|
Bonaparte's |
Ring-billed |
|
Herring (juvenile) |
Herring (1-3
year) |
|
Sabine's |
Glaucous |
|
Thayer's |
Mew |
|
Glaucous-winged |
Heermann's |
|
Little |
Western (1-3
year) |
|
Black-legged Kittiwake |
Iceland |
|
Western (juvenile) |
|
|
Yellow-footed |
|
|
Lesser Black-backed |
|
| |
|
|
Leg Color
|
|
|
Yellow/Flesh
|
Black
|
|
Bonaparte's (immature & adult) |
Mew (immature) |
|
Mew (adult) |
Franklin's
(immature) |
|
Ringbilled (immature & adult) |
Sabine's (adult) |
|
Lesser Black-backed (Immature & adult) |
Kittiwake
(immature & adult) |
|
Yellow-footed (immature & adult) |
Heermann's
(immature & adult) |
| |
|
|
|
Gray/Greenish/Bluish
|
Pinkish |
Reddish
|
|
Mew (immature) |
Ring-billed
(immature) |
Franklin's
(adult) |
|
Ring-billed (imm. & adult) |
Herring (imm. &
adult) |
Little (imm. &
adult) |
|
California (imm. & adult) |
Sabine's |
|
|
|
Glaucous (imm. &
adult) |
|
| |
Iceland (imm. &
adult) |
|
| |
Thayer's (imm. &
adult) |
|
| |
Western (imm. &
adult) |
|
| |
Glaucous-winged (imm.
& adult) |
|
| |
|
|
|
|
|
