« Start Over

Bird Observations

			Date Range: Dec, 1900-2060

Castle Island and Pleasure Bay

Updated ~22 hr(s) ago.

75 species (+16 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
Hooded Merganser
Red-breasted Merganser
Common/Red-breasted Merganser
merganser sp.
Ruddy Duck
duck sp.
Horned Grebe
Red-necked Grebe
Rock Pigeon
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mourning Dove
Long-billed Dowitcher
Ruddy Turnstone
Sanderling
Dunlin
Purple Sandpiper
Semipalmated Sandpiper
Western/Semipalmated Sandpiper
shorebird sp.
Razorbill
alcid sp.
Bonaparte's Gull
Ring-billed Gull
Herring Gull
Great Black-backed Gull
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Iceland Gull
gull sp.
Red-throated Loon
Common Loon
loon sp.
Double-crested Cormorant
cormorant sp.
Great Blue Heron
Northern Harrier
Cooper's Hawk
Bald Eagle
Red-tailed Hawk
hawk sp.
Snowy Owl
Belted Kingfisher
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Red-bellied Woodpecker
Downy Woodpecker
American Kestrel
Merlin
Peregrine Falcon
Blue Jay
American Crow
Common Raven
Black-capped Chickadee
Tufted Titmouse
Horned Lark
Golden-crowned Kinglet
White-breasted Nuthatch
European Starling
Gray Catbird
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Mockingbird
American Robin
House Sparrow
American Pipit
House Finch
American Goldfinch
Snow Bunting
American Tree Sparrow
Dark-eyed Junco
White-throated Sparrow
Savannah Sparrow
Song Sparrow
Swamp Sparrow
new world sparrow sp.
Yellow-rumped Warbler
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Northern Cardinal

KEY:| = insufficient data | = rare to widespread

Download Histogram Data