[cobirds] Denver Urban CBC (Denver, Arapahoe, Adams)

['Hugh Kingery' via Colorado Birds]

    Our Denver Urban Christmas Bird Count tallied 85 species and 31,151 birds. 
That's an average number of species, but the count of individuals dropped to 
78% of the average of 40,066.    We saw big drops for non-native species: Rock 
Pigeon (1,031 vs. 2,024 ave.); Starling (652 vs. 4,244 ave.); and House Sparrow 
(96 vs. 1,320). We also had low counts for Com. Mergansers (191 vs. 476 ave.); 
Coots (18 vs. 87); Bald Eagle (28 vs. 47; high of 96 in 2017); Downy Woodpecker 
(22 vs. 44); House Finch (442 vs. 1142). We had fewer ducks (4,909, ave. 5,564) 
and fewer raptors (146, ave, 200). 
    In contrast, we had high counts for Buffleheads (276; previous high185); 
Hooded Merganser (224, ave. 98; since 2010 they have gradually increased); 40 
Double-crested Cormorants (ave. 4); Eur. Collared-Doves (148; first recorded, 
one in 2005); 124 Am. Goldfinches (ave. 57, only 3 counts with more than a 
hundred).    Barb Masoner's group, south of Hampden, found a new count bird: 3 
Western Bluebirds. Other rarities include a Golden-crowned Sparrow, nicely 
documented with photos by Steve Hebert's group at Bluff Lake, and a Lesser 
Goldfinch at Mary & Dave Driscoll's feeder, also photographed. 
    We had to postpone the count from Jan. 1 due to a horrendous weather 
forecast, and held it on Jan. 5; two sections didn't get covered -- the central 
part of the South Platte and Fairmont Cemetery/Windsor Gardens. The latter got 
covered on Jan. 2, but even adding in their observations doesn't change the 
thrust of the count.   Hugh Kingery

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1 2022 1 5 Bird List.xlsx
Description: MS-Excel 2007 spreadsheet

[cobirds] Denver Urban CBC - Denver, Arapahoe, Adams

['Hugh Kingery' via Colorado Birds]

 Our preliminary count for the Denver Urban CBC Jan. 1, without four of the 
important areas, stands at 80 species, 23,868 individuals. Two-thirds of them 
Canada  Cackling Geese.

So far, House Finches outnumber House Sparrows - a new development - 471 to 
336. As an urban count, after the geese the most common species: Rock Pigeon, 
Eur. Starling,  Am. Crow. Because the three South Platte River areas haven't 
chimed in, we don't have a sense of the duck count (without the river, we have 
565 Mallards). 

100 raptors of 10 species, plus 43 Bald Eagles (42 counted by Diane Buell going 
to the roost at Rocky Mtn. Arsenal National Wildlife Refuge). Unusual species 
include 2 Say's Phoebes found by Mike Serruto's group, as well as the one 
reported yesterday by Lauren Brook; 9  Snow Geese; one Thayer's  2 Lesser 
Black-backed Gulls, both by Cheryl Teuton  Dan Brooks' group at Cherry Creek 
State Park. 

 

Hugh Kingery 
  Franktown, CO
  


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