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Bird Observations

Date Range:
Mar, 1900-2022

Boulder

Updated ~26 hr(s) ago.

224 species (+92 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Snow/Ross's Goose
 
 
 
 
 
Snow x Cackling Goose (hybrid)
 
Ross's x Cackling Goose (hybrid)
 
 
Greater White-fronted x Canada Goose (hybrid)
 
Graylag x Canada Goose (hybrid)
 
Snow x Canada Goose (hybrid)
 
Cackling/Canada Goose
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Trumpeter/Tundra Swan
 
swan sp.
 
goose sp.
 
 
 
 
 
Blue-winged x Cinnamon Teal (hybrid)
 
Blue-winged/Cinnamon Teal
 
 
Blue-winged Teal x Northern Shoveler (hybrid)
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Gadwall x Mallard (hybrid)
 
American Wigeon x Mallard (hybrid)
 
 
Mallard x Mexican Duck (hybrid)
 
Mallard/Mexican Duck
 
 
Gadwall x Northern Pintail (hybrid)
 
 
American Wigeon x Green-winged Teal (hybrid)
 
teal sp.
 
dabbling duck sp.
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
Ring-necked Duck x Greater Scaup (hybrid)
 
 
Ring-necked Duck x Lesser Scaup (hybrid)
 
Ring-necked Duck x scaup sp. (hybrid)
 
Greater/Lesser Scaup
 
Aythya sp.
 
 
 
 
 
Common/Barrow's Goldeneye
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Common/Red-breasted Merganser
 
merganser sp.
 
 
duck sp.
 
 
 
 
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
Horned/Eared Grebe
 
Podiceps sp.
 
 
 
Western/Clark's Grebe
 
grebe sp.
 
 
 
Rock/Band-tailed Pigeon
 
 
 
Streptopelia sp.
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
pigeon/dove sp.
 
 
 
 
 
 
 
 
 
Short-billed/Long-billed Dowitcher
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Lesser/Greater Yellowlegs
 
 
 
 
peep sp.
 
large shorebird sp.
 
shorebird sp.
 
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
 
 
 
Herring/Iceland Gull
 
Larus sp.
 
gull sp.
 
 
 
 
 
Yellow-crowned/Black-crowned Night Heron
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
 
 
 
 
 
 
Sharp-shinned/Cooper's Hawk
 
 
Accipiter sp.
 
 
Golden/Bald Eagle
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
 
Buteo sp.
 
Buteo/eagle sp.
 
hawk sp.
 
eagle sp.
 
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
 
 
 
sapsucker sp.
 
 
 
 
 
 
 
Downy/Hairy Woodpecker
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
woodpecker sp.
 
 
 
 
 
large falcon sp.
 
small falcon sp.
 
falcon sp.
 
diurnal raptor sp.
 
 
 
 
 
Black x Say's Phoebe (hybrid)
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
phoebe sp.
 
 
new world flycatcher sp.
 
 
Loggerhead/Northern Shrike
 
shrike sp.
 
 
 
 
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
raven sp.
 
crow/raven sp.
 
 
 
Black-capped x Mountain Chickadee (hybrid)
 
Black-capped/Mountain Chickadee
 
chickadee sp.
 
 
 
 
Tree/Violet-green Swallow
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
swallow sp.
 
 
 
 
Ruby-crowned/Golden-crowned Kinglet
 
 
 
 
nuthatch sp.
 
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
wren sp.
 
 
 
 
 
 
 
 
 
 
bluebird sp.
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
Bohemian/Cedar Waxwing
 
 
 
 
 
 
 
 
rosy-finch sp.
 
 
 
Haemorhous sp.
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
new world goldfinch sp.
 
finch sp.
 
 
 
 
Spizella sp./American Tree Sparrow
 
 
 
 
 
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
Zonotrichia sp.
 
 
 
 
 
 
 
 
Spotted/Eastern Towhee (Rufous-sided Towhee)
 
towhee sp.
 
new world sparrow sp.
 
 
 
Sturnella meadowlark sp.
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
 
 
 
 
Rusty/Brewer's Blackbird
 
 
 
grackle sp.
 
blackbird sp.
 
 
 
 
 
 
passerine sp.
 
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
bird sp.
 

KEY:| = insufficient data | = rare to widespread

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