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Bird Observations

			Date Range: Jan-Dec, 1900-2022

Castle Island and Pleasure Bay

Updated ~32 hr(s) ago.

157 species (+31 other taxa)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ross's Goose
Brant
Canada Goose
Mute Swan
goose sp.
Wood Duck
Mallard
American Black Duck
Mallard x American Black Duck (hybrid)
Mallard/American Black Duck
Green-winged Teal
Greater Scaup
Lesser Scaup
Greater/Lesser Scaup
King Eider
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Common Eider
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
Surf/Black Scoter
scoter sp.
Long-tailed Duck
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Common/Barrow's Goldeneye
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ruddy Duck
duck sp.
Wild Turkey
Horned Grebe
Red-necked Grebe
grebe sp.
Rock Pigeon
Mourning Dove
Common Nighthawk
Chimney Swift
American Oystercatcher
Black-bellied Plover
American Golden-Plover
Black-bellied Plover/golden-plover sp.
Killdeer
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Semipalmated Plover
Piping Plover
Whimbrel
Short-billed Dowitcher
Spotted Sandpiper
Lesser Yellowlegs
Willet
Greater Yellowlegs
Ruddy Turnstone
Stilt Sandpiper
Buff-breasted Sandpiper
Sanderling
Dunlin
Purple Sandpiper
White-rumped Sandpiper
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Least Sandpiper
Pectoral Sandpiper
Semipalmated Sandpiper
peep sp.
shorebird sp.
Razorbill
Thick-billed Murre
alcid sp.
Bonaparte's Gull
Laughing Gull
Ring-billed Gull
Herring Gull
Great Black-backed Gull
Lesser Black-backed Gull
Iceland Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
gull sp.
Black Skimmer
Least Tern
Caspian Tern
Forster's Tern
Common Tern
Sterna sp.
tern sp.
Red-throated Loon
Common Loon
loon sp.
Manx Shearwater
Northern Gannet
Great Cormorant
Double-crested Cormorant
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
cormorant sp.
Brown Pelican
Yellow-crowned Night Heron
Black-crowned Night Heron
Snowy Egret
Green Heron
Great Egret
Great Blue Heron
Glossy Ibis
Turkey Vulture
Osprey
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Accipiter sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Bald Eagle
Red-shouldered Hawk
Red-tailed Hawk
Buteo sp.
hawk sp.
Snowy Owl
Belted Kingfisher
Yellow-bellied Sapsucker
Red-bellied Woodpecker
Downy Woodpecker
Northern Flicker
American Kestrel
Merlin
Peregrine Falcon
falcon sp.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Eastern Phoebe
Eastern Kingbird
new world flycatcher sp.
Blue-headed Vireo
Warbling Vireo
Blue Jay
American Crow
Fish Crow
crow sp.
Common Raven
Black-capped Chickadee
Tufted Titmouse
Horned Lark
Tree Swallow
Northern Rough-winged Swallow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Barn Swallow
Cave Swallow
swallow sp.
Ruby-crowned Kinglet
Golden-crowned Kinglet
White-breasted Nuthatch
Red-breasted Nuthatch
Brown Creeper
Carolina Wren
European Starling
Gray Catbird
Northern Mockingbird
Hermit Thrush
American Robin
Cedar Waxwing
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
House Sparrow
American Pipit
House Finch
House/Purple Finch
Common Redpoll
American Goldfinch
Lapland Longspur
Snow Bunting
Chipping Sparrow
American Tree Sparrow
Dark-eyed Junco
White-crowned Sparrow
White-throated Sparrow
Savannah Sparrow
Song Sparrow
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Swamp Sparrow
Eastern Towhee
new world sparrow sp.
Bobolink
Baltimore Oriole
Red-winged Blackbird
Brown-headed Cowbird
Common Grackle
Blue-winged Warbler
Common Yellowthroat
American Redstart
Northern Parula
Bay-breasted Warbler
Yellow Warbler
Blackpoll Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Black-throated Blue Warbler
Palm Warbler
Pine Warbler
Yellow-rumped Warbler
new world warbler sp.
Northern Cardinal
Rose-breasted Grosbeak
passerine sp.

KEY:| = insufficient data | = rare to widespread

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