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Bird Observations

Date Range:
Jan-Dec, 1900-2023

Rocky Mountain Arsenal NWR

Updated ~18 hr(s) ago.

280 species (+93 other taxa) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Snow/Ross's Goose
Snow x Cackling Goose (hybrid)
Cackling/Canada Goose
Trumpeter/Tundra Swan
goose sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Blue-winged/Cinnamon Teal
Eurasian x American Wigeon (hybrid)
Mallard x Mexican Duck (hybrid)
Mallard/Mexican Duck
teal sp.
dabbling duck sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Greater/Lesser Scaup
Aythya sp.
Common/Barrow's Goldeneye
Common/Red-breasted Merganser
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
duck sp.
Horned/Eared Grebe
Western/Clark's Grebe
grebe sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
pigeon/dove sp.
hummingbird sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Short-billed/Long-billed Dowitcher
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Red/Red-necked Phalarope
phalarope sp.
Lesser/Greater Yellowlegs
Tringa sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Western/Semipalmated Sandpiper
peep sp.
Calidris sp.
large shorebird sp.
shorebird sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Larus sp.
gull sp.
tern sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Double-crested/Neotropic Cormorant
white egret sp.
Glossy/White-faced Ibis
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hen/Northern Harrier
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.
owl sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Yellow-bellied/Red-naped Sapsucker
Downy/Hairy Woodpecker
woodpecker sp.
large falcon sp.
small falcon sp.
falcon sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Western/Eastern Wood-Pewee
pewee sp. (Contopus sp.)
Alder/Willow Flycatcher (Traill's Flycatcher)
Hammond's/Dusky Flycatcher
Empidonax sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Myiarchus sp.
Cassin's/Western Kingbird
new world flycatcher sp.
Cassin's/Plumbeous Vireo
vireo sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Loggerhead/Northern Shrike
raven sp.
crow/raven sp.
Black-capped/Mountain Chickadee
chickadee sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Tree/Violet-green Swallow
Cliff/Cave Swallow
swallow sp.
Ruby-crowned/Golden-crowned Kinglet
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
nuthatch sp.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
bluebird sp.