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Bird Observations

			Date Range: May, 1900-2021

San Mateo

Updated ~23 hr(s) ago.

339 species (+64 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Goose
Graylag Goose
Greater White-fronted Goose
Brant
Cackling Goose
Canada Goose
Mute Swan
Wood Duck
Blue-winged Teal
Cinnamon Teal
Northern Shoveler
Gadwall
Eurasian Wigeon
American Wigeon
Mallard
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Pintail
Green-winged Teal
Canvasback
Redhead
Ring-necked Duck
Tufted Duck
Greater Scaup
Lesser Scaup
Greater/Lesser Scaup
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
scoter sp.
Long-tailed Duck
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bufflehead
Common Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
California Quail
Wild Turkey
Ring-necked Pheasant
Indian Peafowl
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western/Clark's Grebe
grebe sp.
Rock Pigeon
Band-tailed Pigeon
Eurasian Collared-Dove
Mourning Dove
pigeon/dove sp.
nighthawk sp.
Common Poorwill
Black Swift
Vaux's Swift
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
White-throated Swift
large swift sp.
Black-chinned Hummingbird
Anna's Hummingbird
Calliope Hummingbird
Rufous Hummingbird
Allen's Hummingbird
Rufous/Allen's Hummingbird
Selasphorus sp.
hummingbird sp.
Ridgway's Rail
Virginia Rail
Sora
Common Gallinule
American Coot
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-necked Stilt
American Avocet
Black Oystercatcher
Black-bellied Plover
Pacific Golden-Plover
Killdeer
Semipalmated Plover
Snowy Plover
Whimbrel
Long-billed Curlew
Marbled Godwit
Short-billed Dowitcher
Long-billed Dowitcher
Short-billed/Long-billed Dowitcher
Wilson's Snipe
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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
Ruddy Turnstone
Black Turnstone
Red Knot
Surfbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sharp-tailed Sandpiper
Sanderling
Dunlin
Rock Sandpiper
Least Sandpiper
Western Sandpiper
Semipalmated Sandpiper
peep sp.
Calidris sp.
shorebird sp.
Long-tailed Jaeger
Parasitic Jaeger
Pomarine Jaeger
Parasitic/Pomarine Jaeger
South Polar Skua
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
jaeger sp.
Rhinoceros Auklet
Tufted Puffin
Horned Puffin
Cassin's Auklet
Parakeet Auklet
Marbled Murrelet
Pigeon Guillemot
Common Murre
Ancient Murrelet
Scripps's Murrelet
murrelet sp.
alcid sp.
Black-legged Kittiwake
Sabine's Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bonaparte's Gull
Laughing Gull
Franklin's Gull
Black-tailed Gull
Heermann's Gull
Short-billed Gull
Ring-billed Gull
Western Gull
Kelp Gull
Herring Gull
Glaucous Gull
Herring x Glaucous Gull (hybrid)
California Gull
Glaucous-winged Gull
Western x Glaucous-winged Gull (hybrid)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Herring x Glaucous-winged Gull (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Iceland Gull
Larus sp.
gull sp.
Black Skimmer
Least Tern
Gull-billed Tern
Caspian Tern
Forster's Tern
Arctic Tern
Common Tern
Common/Arctic Tern
Sterna sp.
Elegant Tern
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
tern sp.
Red-throated Loon
Pacific Loon
Common Loon
Yellow-billed Loon
loon sp.
Laysan Albatross
Black-footed Albatross
albatross sp.
Fork-tailed Storm-Petrel
Leach's Storm-Petrel
Ashy Storm-Petrel
storm-petrel sp.
Northern Fulmar
Murphy's Petrel
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hawaiian Petrel
Pink-footed Shearwater
Flesh-footed Shearwater
Buller's Shearwater
Sooty Shearwater
Short-tailed Shearwater
Sooty/Short-tailed Shearwater
Manx Shearwater
Black-vented Shearwater
shearwater sp.
Northern Gannet
Brown Booby
Nazca Booby
Brandt's Cormorant
Pelagic Cormorant
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Double-crested Cormorant
cormorant sp.
American White Pelican
Brown Pelican
American Bittern
Black-crowned Night Heron
Snowy Egret
Green Heron
Western Cattle Egret
Great Egret
Great Blue Heron
White-faced Ibis
Turkey Vulture
Osprey
White-tailed Kite
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
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
Buteo sp.
hawk sp.
Barn Owl
Western Screech-Owl
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Great Horned Owl
Northern Pygmy-Owl
Burrowing Owl
Spotted Owl
Long-eared Owl
Northern Saw-whet Owl
Belted Kingfisher
Red-breasted Sapsucker
sapsucker sp.
Lewis's Woodpecker
Acorn Woodpecker
Downy Woodpecker
Nuttall's Woodpecker
Hairy Woodpecker
Downy/Hairy Woodpecker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pileated Woodpecker
Northern Flicker
woodpecker sp.
American Kestrel
Merlin
Peregrine Falcon
Prairie Falcon
diurnal raptor sp.
Mitred Parakeet
Red-masked Parakeet
Olive-sided Flycatcher
Western Wood-Pewee
Willow Flycatcher
Hammond's Flycatcher
Gray Flycatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Dusky Flycatcher
Western Flycatcher
Empidonax sp.
Black Phoebe
Say's Phoebe
Ash-throated Flycatcher
Tropical Kingbird
Cassin's Kingbird
Western Kingbird
Scissor-tailed Flycatcher
Bell's Vireo
Hutton's Vireo
Yellow-throated Vireo
Cassin's Vireo
Warbling Vireo
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-eyed Vireo
Loggerhead Shrike
Steller's Jay
California Scrub-Jay
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
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Rough-winged Swallow
Barn Swallow
Cliff Swallow
swallow sp.
Bushtit
Wrentit
Ruby-crowned Kinglet
Golden-crowned Kinglet
White-breasted Nuthatch
Pygmy Nuthatch
Red-breasted Nuthatch
Brown Creeper
Blue-gray Gnatcatcher
Rock Wren
Canyon Wren
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
House Wren
Pacific Wren
Marsh Wren
Bewick's Wren
wren sp.
American Dipper
European Starling
California Thrasher
Sage Thrasher
Northern Mockingbird
Western Bluebird
Townsend's Solitaire
Varied Thrush
Swainson's Thrush
Hermit Thrush
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Robin
Cedar Waxwing
Zebra Finch
Scaly-breasted Munia
House Sparrow
American Pipit
House Finch
Purple Finch
Red Crossbill
European Goldfinch
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.
Grasshopper Sparrow
Chipping Sparrow
Clay-colored Sparrow
Black-chinned Sparrow
Brewer's Sparrow
Lark Sparrow
Lark Bunting
American Tree Sparrow
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
Golden-crowned Sparrow
White-throated Sparrow
Bell's Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Vesper Sparrow
Savannah Sparrow
Song Sparrow
Lincoln's Sparrow
California Towhee
Rufous-crowned Sparrow
Green-tailed Towhee
Spotted Towhee
new world sparrow sp.
Yellow-breasted Chat
Yellow-headed Blackbird
Bobolink
Western Meadowlark
Orchard Oriole
Hooded Oriole
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bullock's Oriole
Baltimore Oriole
new world oriole sp.
Red-winged Blackbird
Tricolored Blackbird
Brown-headed Cowbird
Brewer's Blackbird
Great-tailed Grackle
blackbird sp.
Black-and-white Warbler
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
MacGillivray's Warbler
Kentucky Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Yellowthroat
Hooded Warbler
Northern Parula
Magnolia Warbler
Yellow Warbler
Chestnut-sided Warbler
Black-throated Blue Warbler
Palm Warbler
Yellow-rumped Warbler
Black-throated Gray Warbler
Townsend's Warbler
Hermit Warbler
Black-throated Gray/Hermit Warbler
Townsend's/Hermit Warbler
Setophaga sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wilson's Warbler
new world warbler sp.
Summer Tanager
Western Tanager
Rose-breasted Grosbeak
Black-headed Grosbeak
Rose-breasted x Black-headed Grosbeak (hybrid)
Rose-breasted/Black-headed Grosbeak
Lazuli Bunting
Indigo Bunting
Lazuli/Indigo Bunting
Dickcissel
passerine sp.

KEY:| = insufficient data | = rare to widespread

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