San Mateo, CA, USA (biking)

Mark Kudrav

Date of Green Big Day: 4/21/2012

County, State: San Mateo, CA

Species Total: 126

Biking, some hiking

Number of Team Participants: one

Best Bird of the Day? Harlequin Duck

Harlequin Duck, By: nigel








Pacific-slope Flycatcher

Great Horned Owl

American Robin

Purple Finch

Song Sparrow



Common Yellowthroat

Grasshopper Sparrow

Red-winged Blackbird

American Coot

California Towhee

Orange-crowned Warber

Black-headed Grosbeak

California Quail

Pacific Wren

Barn Swallow

House Wren

Western Tanager

Mourning Dove


Steller’s Jay

Chestnut­-backed Chickadee

California Thrasher

Band-tailed Pigeon

Fox Sparrow

Wilson’s Warbler

Northern Pygmy-Owl

Western Scrub Jay

Downy Woodpecker

Northern Flicker

Macgillivray’s Warbler

Ruby-crowned Kinglet

Hairy Woodpecker

Spotted Towhee

Brown Creeper

Hutton’s Vireo

Brewer’s Blackbird

American Goldfinch

Tree Swallow

Common Raven

Common Merganser

Belted Kingfisher

Western Gull

Glaucaus-winged Gull

House Finch

European Starling

Red-tailed Hawk

Anna’s Hummingbird

Eurasian Collared Dove

Golden Crowned Sparrow

Savannah Sparrow

Pigeon Guillemot

Common Loon

Red-throated Loon

Pacific Loon

Western Grebe

Eared Grebe

Black Turnstone

Double-crested Cormorant

Brant’s Cormorant

Pelagic Cormorant



Black Oystercatcher

Surf Scoter

Red-breasted Merganser

Common Murre

Herring Gull

California Gull

Bonaparte’s Gull

Brown Pelican

Caspian Tern


Marbled Murrelet

Horned Grebe

Cliff Swallow

Canada Goose

Rock Pigeon

Ruddy Turnstone

Semipalmated Plover

Snowy Plover

Thayer’s Gull


Turkey Vulture


Pine Siskin

Cedar Waxwing

Northern Harrier

Yellow-rumped Warbler

White-throated Sparrow

Lincoln Sparrow

Bewick’s Wren

Cooper’s Hawk

Bank Swallow

American Kestrel

Red-shouldered Hawk

Pygmy Nuthatch

Great Blue Heron

Clark’s Grebe

American Crow

Olive-sided Flycatcher

Dark-eyed Junco

Marsh Wren


Great Egret


Snowy Egret

Greater Yellowlegs


Harlequin Duck

Green-winged Teal

Western Sandpiper

Least Sandpiper

Long-billed Dowitcher


Cinnamon Teal

White-tailed Kite

Lesser Goldfinch

Black Pheobe

Allen’s Hummingbird

House Sparrow

Yellow Warbler

Western Bluebird

Swainson’s Thrush

Barn Owl

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