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Bird Observations

			Date Range: Sep, 1900-2021

San Mateo

Updated ~32 hr(s) ago.

371 species (+76 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Graylag x Swan Goose (hybrid)
Greater White-fronted Goose
Brant
Cackling Goose
Canada Goose
Mute Swan
swan sp.
goose sp.
Wood Duck
Mandarin Duck
Blue-winged Teal
Cinnamon Teal
Blue-winged/Cinnamon Teal
Northern Shoveler
Gadwall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eurasian Wigeon
American Wigeon
Eurasian x American Wigeon (hybrid)
Mallard
Northern Pintail
Green-winged Teal
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
Greater/Lesser Scaup
Harlequin Duck
Surf Scoter
White-winged Scoter
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black Scoter
scoter sp.
Bufflehead
Common Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
California Quail
Wild Turkey
Ring-necked Pheasant
Pied-billed Grebe
Horned Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western/Clark's Grebe
grebe sp.
Rock Pigeon
Band-tailed Pigeon
Eurasian Collared-Dove
White-winged Dove
Mourning Dove
pigeon/dove sp.
Yellow-billed Cuckoo
Common Poorwill
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black Swift
Chimney Swift
Vaux's Swift
White-throated Swift
Anna's Hummingbird
Costa's Hummingbird
Rufous Hummingbird
Allen's Hummingbird
Rufous/Allen's Hummingbird
hummingbird sp.
Ridgway's Rail
Virginia Rail
Sora
Common Gallinule
American Coot
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sandhill Crane
Black-necked Stilt
American Avocet
Black Oystercatcher
Black-bellied Plover
American Golden-Plover
Pacific Golden-Plover
American/Pacific Golden-Plover (Lesser Golden-Plover)
Killdeer
Semipalmated Plover
Snowy Plover
Whimbrel
Long-billed Curlew
Bar-tailed Godwit
Marbled Godwit
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
Wilson's Phalarope
Red Phalarope
Red-necked Phalarope
Red/Red-necked Phalarope
phalarope sp.
Spotted Sandpiper
Solitary Sandpiper
Wandering Tattler
Lesser Yellowlegs
Willet
Greater Yellowlegs
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lesser/Greater Yellowlegs
Ruddy Turnstone
Black Turnstone
Red Knot
Surfbird
Ruff
Sharp-tailed Sandpiper
Curlew Sandpiper
Stilt Sandpiper
Buff-breasted Sandpiper
Sanderling
Dunlin
Baird's Sandpiper
Least Sandpiper
Pectoral Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Western Sandpiper
Semipalmated Sandpiper
peep sp.
Calidris sp.
large shorebird sp.
shorebird sp.
Long-tailed Jaeger
Parasitic Jaeger
Long-tailed/Parasitic Jaeger
Pomarine Jaeger
Parasitic/Pomarine Jaeger
South Polar Skua
jaeger sp.
Rhinoceros Auklet
Tufted Puffin
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cassin's Auklet
Marbled Murrelet
Pigeon Guillemot
Common Murre
Ancient Murrelet
Scripps's Murrelet
Guadalupe Murrelet
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
Craveri's Murrelet
Scripps's/Craveri's Murrelet
Scripps's/Guadalupe/Craveri's Murrelet
murrelet sp.
alcid sp.
Little Gull
Black-legged Kittiwake
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sabine's Gull
Bonaparte's Gull
Laughing Gull
Franklin's Gull
Heermann's Gull
Short-billed Gull
Ring-billed Gull
Western Gull
Herring Gull
Glaucous Gull
California Gull
Glaucous-winged Gull
Western x Glaucous-winged Gull (hybrid)
Western/Glaucous-winged Gull
Iceland Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Larus sp.
gull sp.
Black Skimmer
Least Tern
Caspian Tern
Black Tern
Forster's Tern
Arctic Tern
Common Tern
Common/Arctic Tern
Sterna sp.
Elegant Tern
tern sp.
Red-billed Tropicbird
Red-throated Loon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pacific Loon
Common Loon
loon sp.
Laysan Albatross
Black-footed Albatross
Wilson's Storm-Petrel
Fork-tailed Storm-Petrel
Leach's Storm-Petrel
Ashy Storm-Petrel
Black Storm-Petrel
storm-petrel sp. (white-rumped)
storm-petrel sp.
Northern Fulmar
White-chinned Petrel
Pink-footed Shearwater
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Flesh-footed Shearwater
Great Shearwater
Buller's Shearwater
Sooty Shearwater
Short-tailed Shearwater
Sooty/Short-tailed Shearwater
Manx Shearwater
Black-vented Shearwater
shearwater sp.
Northern Gannet
Brown Booby
Blue-footed Booby
Brandt's Cormorant
Pelagic Cormorant
Double-crested Cormorant
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
cormorant sp.
American White Pelican
Brown Pelican
American Bittern
Least Bittern
Yellow-crowned Night Heron
Black-crowned Night Heron
Snowy Egret
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
White-faced Ibis
Turkey Vulture
Osprey
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-tailed Kite
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Sharp-shinned/Cooper's Hawk
Accipiter sp.
Bald Eagle
Red-shouldered Hawk
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Ferruginous Hawk
Buteo sp.
hawk sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Barn Owl
Western Screech-Owl
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Long-eared Owl
Northern Saw-whet Owl
owl sp.
Belted Kingfisher
Red-breasted Sapsucker
Red-naped x Red-breasted Sapsucker (hybrid)
sapsucker sp.
Lewis's Woodpecker
Acorn Woodpecker
Downy Woodpecker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Nuttall's Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
Pileated Woodpecker
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
falcon sp.
diurnal raptor sp.
Budgerigar
Mitred Parakeet
Red-masked Parakeet
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Olive-sided Flycatcher
Western Wood-Pewee
Willow Flycatcher
Least Flycatcher
Hammond's Flycatcher
Gray Flycatcher
Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Black Phoebe
Say's Phoebe
Vermilion Flycatcher
Ash-throated Flycatcher
Sulphur-bellied Flycatcher
Tropical Kingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Western Kingbird
yellow-bellied kingbird sp.
Eastern Kingbird
Scissor-tailed Flycatcher
Hutton's Vireo
Cassin's Vireo
Plumbeous Vireo
solitary vireo sp.
Philadelphia Vireo
Warbling Vireo
Red-eyed Vireo
Yellow-green Vireo
Loggerhead Shrike
Steller's Jay
California Scrub-Jay
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Crow
Common Raven
crow/raven sp.
Chestnut-backed Chickadee
Oak Titmouse
Horned Lark
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Purple Martin
Northern Rough-winged Swallow
Barn Swallow
Cliff Swallow
swallow sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-whiskered Bulbul
Dusky Warbler
Bushtit
Wrentit
Ruby-crowned Kinglet
Golden-crowned Kinglet
White-breasted Nuthatch
Pygmy Nuthatch
Red-breasted Nuthatch
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
House Wren
Pacific Wren
Marsh Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bewick's Wren
wren sp.
American Dipper
European Starling
Gray Catbird
California Thrasher
Sage Thrasher
Northern Mockingbird
Western Bluebird
Townsend's Solitaire
Varied Thrush
Swainson's Thrush
Hermit Thrush
American Robin
Cedar Waxwing
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Phainopepla
Northern Red Bishop
House Sparrow
Red-throated Pipit
American Pipit
pipit sp.
House Finch
Purple Finch
Yellow-fronted Canary
Red Crossbill
Pine Siskin
Lesser Goldfinch
Lawrence's Goldfinch
American Goldfinch
new world goldfinch sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Spinus sp.
Lapland Longspur
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Brewer's Sparrow
Spizella sp.
Black-throated Sparrow
Lark Sparrow
Lark Bunting
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
Golden-crowned Sparrow
White-throated Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Zonotrichia sp.
Bell's Sparrow
Vesper Sparrow
Savannah Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
California Towhee
Green-tailed Towhee
Spotted Towhee
new world sparrow sp.
Yellow-breasted Chat
Yellow-headed Blackbird
Bobolink
Western Meadowlark
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Orchard Oriole
Hooded Oriole
Bullock's Oriole
new world oriole sp.
Red-winged Blackbird
Tricolored Blackbird
Brown-headed Cowbird
Brewer's Blackbird
Great-tailed Grackle
blackbird sp.
Ovenbird
Northern Waterthrush
Golden-winged Warbler
Black-and-white Warbler
Prothonotary Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Tennessee Warbler
Orange-crowned Warbler
Lucy's Warbler
Nashville Warbler
Virginia's Warbler
Connecticut Warbler
MacGillivray's Warbler
Common Yellowthroat
Hooded Warbler
American Redstart
Cape May Warbler
Northern Parula
Magnolia Warbler
Bay-breasted Warbler
Blackburnian Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yellow Warbler
Chestnut-sided Warbler
Blackpoll Warbler
Black-throated Blue Warbler
Palm Warbler
Yellow-rumped Warbler
Yellow-throated Warbler
Prairie Warbler
Black-throated Gray Warbler
Townsend's Warbler
Hermit Warbler
Townsend's/Hermit Warbler
Black-throated Green Warbler
Canada Warbler
Wilson's Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
new world warbler sp.
Summer Tanager
Western Tanager
Rose-breasted Grosbeak
Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
Lazuli/Indigo Bunting
Dickcissel
passerine sp.
bird sp.

KEY:| = insufficient data | = rare to widespread

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