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Bird Observations

			Date Range: Jan-Dec, 1900-2024

Alviso Slough

Updated ~43 hr(s) ago.

181 species (+25 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cackling Goose
Canada Goose
Blue-winged Teal
Cinnamon Teal
Northern Shoveler
Gadwall
American Wigeon
Mallard
Northern Pintail
Green-winged Teal
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Greater/Lesser Scaup
Surf Scoter
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Common x Barrow's Goldeneye (hybrid)
Common/Barrow's Goldeneye
Hooded Merganser
Common Merganser
Red-breasted Merganser
Ruddy Duck
duck sp.
California Quail
Ring-necked Pheasant
Indian Peafowl
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rock Pigeon
Eurasian Collared-Dove
Mourning Dove
Vaux's Swift
White-throated Swift
Anna's Hummingbird
hummingbird sp.
Ridgway's Rail
Virginia Rail
Sora
Common Gallinule
American Coot
Black-necked Stilt
American Avocet
Black-bellied Plover
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
golden-plover sp.
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
Wilson's Phalarope
Red-necked Phalarope
Spotted Sandpiper
Lesser Yellowlegs
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Willet
Greater Yellowlegs
Lesser/Greater Yellowlegs
Black Turnstone
Ruff
Sanderling
Dunlin
Least Sandpiper
Western Sandpiper
peep sp.
Calidris sp.
large shorebird sp.
Common Murre
Sabine's Gull
Bonaparte's Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Short-billed Gull
Ring-billed Gull
Western Gull
American Herring Gull
Glaucous Gull
California Gull
Glaucous-winged Gull
Western x Glaucous-winged Gull (hybrid)
American Herring x Glaucous-winged Gull (hybrid)
Iceland Gull
Larus sp.
gull sp.
Black Skimmer
Least Tern
Caspian Tern
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Forster's Tern
Elegant Tern
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Horned/Eared Grebe
Western Grebe
Clark's Grebe
Western/Clark's Grebe
Red-throated Loon
Common Loon
Brandt's Cormorant
Double-crested Cormorant
White-faced Ibis
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Bittern
Black-crowned Night Heron
Snowy Egret
Green Heron
Great Egret
Great Blue Heron
American White Pelican
Brown Pelican
Turkey Vulture
Osprey
White-tailed Kite
Golden Eagle
Sharp-shinned Hawk
Cooper's Hawk
Northern Harrier
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bald Eagle
Red-shouldered Hawk
Red-tailed Hawk
American Barn Owl
Burrowing Owl
Short-eared Owl
Belted Kingfisher
Downy Woodpecker
Nuttall's Woodpecker
Northern Flicker
American Kestrel
Merlin
Peregrine Falcon
Willow Flycatcher
Western Flycatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Empidonax sp.
Black Phoebe
Say's Phoebe
Western Kingbird
Loggerhead Shrike
California Scrub-Jay
American Crow
Common Raven
Chestnut-backed Chickadee
Oak Titmouse
Bank Swallow
Tree Swallow
Violet-green Swallow
Tree/Violet-green Swallow
Northern Rough-winged Swallow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Barn Swallow
Cliff Swallow
swallow sp.
Bushtit
Ruby-crowned Kinglet
White-breasted Nuthatch
Northern House Wren
Marsh Wren
Bewick's Wren
European Starling
California Thrasher
Northern Mockingbird
Western Bluebird
Hermit Thrush
American Robin
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cedar Waxwing
House Sparrow
American Pipit
House Finch
Purple Finch
Pine Siskin
Lesser Goldfinch
American Goldfinch
Fox Sparrow
Dark-eyed Junco
White-crowned Sparrow
Golden-crowned Sparrow
Zonotrichia sp.
Savannah Sparrow
Song Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lincoln's Sparrow
Swamp Sparrow
California Towhee
Spotted Towhee
new world sparrow sp.
Western Meadowlark
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.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Orange-crowned Warbler
Common Yellowthroat
Yellow Warbler
Chestnut-sided Warbler
Yellow-rumped Warbler
Black-throated Gray Warbler
Townsend's Warbler
Wilson's Warbler
Western Tanager
Black-headed Grosbeak
passerine sp.

KEY:| = insufficient data | = rare to widespread

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