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February 2011 Wildlife Inventory

February is often a slow month for birders in Boulder County with some trying their luck in more exotic climates. The first sighting of Mountain Bluebirds, this year on the 24th, is always an exciting harbinger of spring. Ducks, particularly our diving ducks, increased greatly in numbers with the most unusual probably being a Ruddy Duck that seems to be wintering at Valmont Reservoir. A Common Loon, also seen on Valmont Reservoir, was an unusual February sighting.

Chihuahuan Raven is always somewhat difficult to confirm, although often suspected when a small oddly calling raven is encountered. However, care must be taken later in the breeding season when young Common Ravens may be both smaller than adults and have odd sounding calls. Viewing of the throat hackles and comparative size and feathering of the bill must occur for positive identification. Bushtits seem to have been seen much more regularly than in the past. Flocks of Evening Grosbeaks have been reported in the foothills after a few years when this species was largely absent. Gray Catbird, Swamp Sparrow and Harris’s Sparrow all continued to stay in the locations that they were observed in January. Fifty Great-tailed Grackles were reported at Stearn’s Lake; this marsh loving Icterid is definitely on the increase and a more likely winter sighting than Common Grackle. Altogether 96 bird species were reported for February, a very average total for this month. TOP
Birds

SPECIES Feb. 2011 DATE(S) AREA(S) NO. OBSERVER
Snow Goose 24,25 20 2 LAG
Cackling Goose 1,22,24 20,30 51  
Canada Goose Present  
Tundra Swan 5,23,26,27 23,24 1
Wood Duck 12 23 2 WBC
Gadwall 15,22,23,24,26,27 23,30 74  
American Wigeon 12,15,24,26,27 23,24,30 46  
Mallard Present  
Northern Shoveler 7,22,23,24 30 25 ABr
Northern Pintail 5,27 23,24 14  
Green-winged Teal 26,27 23 60  
Canvasback 12,26 23,24 14 WBC
Redhead 5,12,22,26,27 23,24,25 955  
Ring-necked Duck 7,15,22,23,24,26,27 23,30 65  
Lesser Scaup 5,7,15,22,24,27 24,25,30 16  
Bufflehead 26 23 6 WBC
Common Goldeneye 5,12,26,27 23,24,25 31  
Hooded Merganser 5,26 13,23 22  
Common Merganser 5,12,26,27 22,23,24 175  
Red-breasted Merganser 12,27 24 8  
Ruddy Duck 5 24 1 SBo
Common Loon 5 24 1 SBo
Pied-billed Grebe 12,22,24 24,30 3  
Horned Grebe 5,12,27 24 3  
Western Grebe 12,27 24 14  
Double-crested Cormorant 12 24 1 WBC
Great Blue Heron 5,12,26 13,23 8  
Bald Eagle 1,5,12,15,22 8,19,20,22,23,24,26,33 17  
Northern Harrier 5,15 22,26 2  
Sharp-shinned Hawk 8,15,27 21,24,26 3  
Cooper's Hawk 6,8,12 30,31 2  
Red-tailed Hawk 5,12,15,22,23,26,27 pl.,ft. 32  
Ferruginous Hawk 12,20 24 1  
Golden Eagle 5 24 2 SBo
American Kestrel 5,8,12,15,24 7,13,18,22,24,26,30 12  
Merlin 11 11 1 SSe
Prairie Falcon 26 23 1 WBC
American Coot     Present  
Franklin's Gull 26* 23 1 SBo,WBC
Mew Gull 4,6 24 1 TF
Ring-billed Gull 4,5,7,12,15,26,27 22,23,24,25,30 10075  
California Gull 5 6 1 JVa
Herring Gull 4 24 50 TF
Thayer's Gull 4,6 24 10 TF
Lesser Black-backed Gull 4,5,6 6,24 8  
Glaucous Gull 4 24 2 TF
Rock Pigeon     Present  
Eurasian Collared-Dove 1,5,6,8,12,15,26 20,21,22,23,24,25,31 12  
White-winged Dove 15* 21 2 NPi
Mourning Dove 5 13 1 SLa
Barn Owl 1 19 1 LAG
Great-horned Owl 1,15,27 8,13,20 4  
Belted Kingfisher 5,22,23,27 13,23,30 3  
Downy Woodpecker a.m. 20,23,24,31,39,43 10  
Hairy Woodpecker 1,5,10,15,18,20 33,36,37,39,43 7  
Northern Flicker     Present  
Northern Shrike 18,27 13,17 2  
Steller's Jay     Present  
Blue Jay 1,2,5,7,12,13,22 13,20,23,31 5  
Clark's Nutcracker 5 39,43 4 ABr
Black-billed Magpie     Present  
American Crow a.m. pl.,ft.,mt. 122 Andes-Georges
Chihuahuan Raven 12* 19 1 EKl
Common Raven 1,5,12,15,22,23,26 pl.,mt.,alp. 30  
Black-capped Chickadee     Present  
Mountain Chickadee     Present  
Bushtit 8,18 21,33 8  
Red-breasted Nuthatch 5 39 2 ABr
White-breasted Nuthatch a.m. 17,23,31,36,37 10  
Pygmy Nuthatch 1,5,10,20 37,43 15  
Brown Creeper 1,8,12,13,26 23,31 3  
Winter Wren 11,20 11,23 2  
American Dipper 12 23 1 WBC
Mountain Bluebird 24* 29 3 GOe
Townsend's Solitaire 1,5 20,39 2  
American Robin     Present  
Gray Catbird 28 7 1 TF
European Starling     Present  
Cedar Waxwing 3,8,12 11,30 24  
Yellow-rumped Warbler 20 23 1 CNu
American Tree Sparrow 1 20 1 LAG
Song Sparrow 5,7,15,26 13,23,30 11  
Swamp Sparrow 11,12,13,28 7,11 2  
Harris's Sparrow 1,3,5,6,7,8,17 31 1 A&GBr
White-crowned Sparrow 16,27 14,24 25  
Golden-crowned Sparrow 16 14 1 SSe
Dark-eyed Junco 1,5,15 20,22,36 9  
Red-winged Blackbird     Present  
Western Meadowlark     Present  
Great-tailed Grackle 15 8 50 CPe
Pine Grosbeak 5 39 22 ABr
House Finch     Present  
Pine Siskin 19 37 1 G&LM
American Goldfinch 1,2,12,13,22 20,23,31 4  
Evening Grosbeak 5 39 25 ABr
House Sparrow     Present  
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Mammals, Reptiles and Amphibians
SPECIES Feb. 2011 DATE(S) AREA(S) NO. OBSERVER
Black-tailed Prairie Dog Present
Fox Squirrel     Present  
Chickaree or Pine Squirrel 5 39 2 ABr
House Mouse 1 20 1 LAG
Coyote 1,22 20,37 3  
Raccoon 1 20 1 LAG
American Elk 22 37 1 G&LM
Mule Deer     Present  
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Contributors to the February 2011 Inventory:
Linda Andes-Georges, Skyler Bol, Bond, Kitty Brigham, Alex & Gillian Brown, Ted Floyd, Steve Frye,  Steve Jones, Bill Kaempfer, Elena Klaver, Sandra Laursen, Gene and Lynn Monroe, Christian Nunes,  George Oetzel, Laura Osborn, Chris Petrizzo, Nathan Pieplow, Scott Severs, Tim Smart, Cara Stiles, John Vanderpoel, Wild Bird Center. TOP