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Bird Observations

			Date Range: Dec, 1900-2022

Castle Island and Pleasure Bay

Updated ~22 hr(s) ago.

71 species (+14 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Brant
Canada Goose
Mute Swan
goose sp.
Mallard
American Black Duck
Mallard/American Black Duck
Greater Scaup
Lesser Scaup
Greater/Lesser Scaup
Common Eider
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Surf/Black Scoter
scoter sp.
Long-tailed Duck
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
Horned Grebe
Red-necked Grebe
Rock Pigeon
Mourning Dove
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ruddy Turnstone
Sanderling
Dunlin
Purple Sandpiper
shorebird sp.
Razorbill
alcid sp.
Bonaparte's Gull
Ring-billed Gull
Herring Gull
Great Black-backed Gull
Iceland Gull
gull sp.
Red-throated Loon
Common Loon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
loon sp.
Double-crested Cormorant
Great Blue Heron
Northern Harrier
Cooper's Hawk
Bald Eagle
Red-tailed Hawk
hawk sp.
Snowy Owl
Belted Kingfisher
Red-bellied Woodpecker
Downy Woodpecker
American Kestrel
Merlin
Peregrine Falcon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Blue Jay
American Crow
Common Raven
Black-capped Chickadee
Tufted Titmouse
Horned Lark
Golden-crowned Kinglet
White-breasted Nuthatch
European Starling
Gray Catbird
Northern Mockingbird
American Robin
House Sparrow
House Finch
American Goldfinch
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Snow Bunting
American Tree Sparrow
Dark-eyed Junco
White-throated Sparrow
Savannah Sparrow
Song Sparrow
Swamp Sparrow
new world sparrow sp.
Yellow-rumped Warbler
Northern Cardinal

KEY:| = insufficient data | = rare to widespread