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Bird Observations

			Date Range: Jan-Dec, 1900-2022

Castle Rock

Updated ~36 hr(s) ago.

140 species (+12 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Brant
Canada Goose
Domestic goose sp. x Canada Goose (hybrid)
Mallard
American Black Duck
Green-winged Teal
Greater Scaup
King Eider
Common Eider
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
Surf/Black Scoter
scoter sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Long-tailed Duck
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Common Merganser
Red-breasted Merganser
Ruddy Duck
Wild Turkey
Horned Grebe
Red-necked Grebe
Eared Grebe
Rock Pigeon
Mourning Dove
Chimney Swift
American Oystercatcher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Killdeer
Semipalmated Plover
Whimbrel
American Woodcock
Spotted Sandpiper
Solitary Sandpiper
Greater Yellowlegs
Ruddy Turnstone
Red Knot
Sanderling
Dunlin
Purple Sandpiper
Semipalmated Sandpiper
shorebird sp.
Black Guillemot
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Razorbill
Black-legged Kittiwake
Bonaparte's Gull
Laughing Gull
Ring-billed Gull
Herring Gull
Great Black-backed Gull
Glaucous Gull
Lesser Black-backed Gull
Iceland Gull
gull sp.
Least Tern
Caspian Tern
Black Tern
Common Tern
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sterna sp.
tern sp.
Red-throated Loon
Common Loon
loon sp.
Wilson's Storm-Petrel
Leach's Storm-Petrel
Cory's Shearwater
Great Shearwater
Sooty Shearwater
Manx Shearwater
Northern Gannet
Great Cormorant
Double-crested Cormorant
cormorant sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-crowned Night Heron
Snowy Egret
Great Egret
Great Blue Heron
Glossy Ibis
Turkey Vulture
Osprey
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Bald Eagle
Red-shouldered Hawk
Red-tailed Hawk
Snowy Owl
Yellow-bellied Sapsucker
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Downy Woodpecker
Northern Flicker
American Kestrel
Merlin
Peregrine Falcon
Great Crested Flycatcher
Eastern Kingbird
Red-eyed Vireo
Blue Jay
American Crow
Fish Crow
Black-capped Chickadee
Tufted Titmouse
Bank Swallow
Tree Swallow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Rough-winged Swallow
Barn Swallow
Cliff Swallow
Ruby-crowned Kinglet
Golden-crowned Kinglet
Ruby-crowned/Golden-crowned Kinglet
White-breasted Nuthatch
Red-breasted Nuthatch
Brown Creeper
House Wren
Winter Wren
Carolina Wren
European Starling
Gray Catbird
Northern Mockingbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
American Robin
Cedar Waxwing
House Sparrow
American Pipit
House Finch
Purple Finch
Pine Siskin
American Goldfinch
Snow Bunting
Dark-eyed Junco
White-crowned Sparrow
White-throated Sparrow
Savannah Sparrow
Song Sparrow
Swamp Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
new world sparrow sp.
Baltimore Oriole
Red-winged Blackbird
Brown-headed Cowbird
Common Grackle
Black-and-white Warbler
Common Yellowthroat
American Redstart
Cape May Warbler
Yellow Warbler
Blackpoll Warbler
Palm Warbler
Pine Warbler
Yellow-rumped Warbler
new world warbler sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Cardinal
Dickcissel

KEY:| = insufficient data | = rare to widespread

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