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Bird Observations

Date Range:
Jan, 1900-2060

Castle Island & Pleasure Bay

Updated ~22 hr(s) ago.

71 species (+17 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Ross's Goose  
Brant  
Canada Goose  
Mute Swan  
Mallard  
American Black Duck  
Mallard x American Black Duck (hybrid)  
Mallard/American Black Duck  
Ring-necked Duck  
Greater Scaup  
Lesser Scaup  
Greater/Lesser Scaup  
Common Eider  
Surf Scoter  
White-winged Scoter  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Black Scoter  
Surf/Black Scoter  
scoter sp.  
Long-tailed Duck  
Bufflehead  
Common Goldeneye  
Barrow's Goldeneye  
Hooded Merganser  
Red-breasted Merganser  
Common/Red-breasted Merganser  
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.  
Ring-billed Gull  
Herring Gull  
Iceland Gull  
Lesser Black-backed Gull  
Great Black-backed Gull  
gull sp.  
Red-throated Loon  
Common Loon  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
loon sp.  
Great Cormorant  
Double-crested Cormorant  
cormorant sp.  
Great Blue Heron  
Turkey Vulture  
Northern Harrier  
Sharp-shinned Hawk  
Cooper's Hawk  
Bald Eagle  
Red-tailed Hawk  
Buteo sp.  
hawk sp.  
Snowy Owl  
Downy Woodpecker  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Kestrel  
Merlin  
Peregrine Falcon  
falcon sp.  
Blue Jay  
American Crow  
Fish Crow  
Common Raven  
Black-capped Chickadee  
Horned Lark  
White-breasted Nuthatch  
Carolina Wren  
European Starling  
Northern Mockingbird  
Hermit Thrush  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
American Robin  
House Sparrow  
House Finch  
American Goldfinch  
Snow Bunting  
American Tree Sparrow  
Dark-eyed Junco  
White-throated Sparrow  
Savannah Sparrow  
Song Sparrow  
new world sparrow sp.  
Northern Cardinal  
passerine sp.  

KEY:| = insufficient data | = rare to widespread

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