« Start Over

Bird Observations

Date Range:
Mar, 1900-2060

Castle Rock

Updated ~21 hr(s) ago.

46 species (+2 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Brant  
Canada Goose  
Mallard  
American Black Duck  
Common Eider  
Surf Scoter  
White-winged Scoter  
Black Scoter  
Surf/Black Scoter  
Long-tailed Duck  
Bufflehead  
Common Goldeneye  
Common Merganser  
Red-breasted Merganser  
Horned Grebe  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Red-necked Grebe  
Eared Grebe  
Mourning Dove  
Black Guillemot  
Ring-billed Gull  
Herring Gull  
Great Black-backed Gull  
gull sp.  
Red-throated Loon  
Common Loon  
Northern Gannet  
Great Cormorant  
Double-crested Cormorant  
Cooper's Hawk  
Downy Woodpecker  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Northern Flicker  
Blue Jay  
American Crow  
Black-capped Chickadee  
White-breasted Nuthatch  
Carolina Wren  
European Starling  
Northern Mockingbird  
American Robin  
House Sparrow  
House Finch  
Pine Siskin  
American Goldfinch  
White-throated Sparrow  
Song Sparrow  
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Brown-headed Cowbird  
Common Grackle  
Northern Cardinal  

KEY:| = insufficient data | = rare to widespread

Download Histogram Data