Date: 12/7/17 3:20 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for December 7, 2017
Hello cobirders

Our report is called Rare Bird Alert because search engines find it
better. The report is really "Uncommon Bird Report" Not all uncommon
birds are rare birds. Birders may want to know where to see them anyway!
Without being a member, "cobirders" can be read at:

Report Uncommon Birds at: 303-324-7994 or

NOTE: Reports do not confirm sightings. Choose to chase at your own risk
and expense.!
NOTE: To reduce length of report, only recent sightings listed; visit
Colorado Birding Society's website everyday for additional sightings!

Reports added: 12/6/2017
Adams (Harris's Sparrow, Common Loon)
Arapahoe (Lesser Black-backed Gull)
Boulder (Rosy Finches)
Chaffee (Pinyon Jay)
Douglas (Brant)
Jefferson (Common Redpoll, Greater Scaup, Harris's Sparrow, Least
Larimer (Lesser Black-backed Gull, Greater White-fronted Goose)
Ouray (Surf Scoter)


Adams County
++++First Creek Trail
Harris's Sparrow (John Breitsch/Marion & John Warren) (first 11/29) last
(With flock of American Tree Sparrows 1/4 to 1/2 mile west of Buckley
++++Rocky Mountain Arsenal
Common Loon --Lake Ladora (Candice Johnson/Warren) (first 10/31) last
++++Lowell Ponds Wildlife Area
American Dipper (Bob Canter) (first 12/4) 2; last 12/5
(Latest: just east of Lowell Blvd & downstream of bike path bridge)

Arapahoe County
++++Aurora Reservoir
Lesser Black-backed Gull (Dave King/Stevens:Kosten) (first 11/5) last 12/6
++++Cherry Creek Reservoir
Greater White-fronted Goose --eastern side of Campgrounds (Bob Righter)
last 12/5
++++South Platte Park
Greater Scaup (2) --C470 area (Christopher Warneke/Washburn:Thompson)
(first 11/24) 5; last 12/4
++++Chapel Hill Memorial Gardens
Harris's Sparrow (Jared Del Rosso) first 12/3

Boulder County
++++Eldora Mountain Resort
Gray-crowned Rosy Finch (19) (John Malenrich) first 12/6
Brown-capped Rosy Finch (6) (Malenich) first 12/6
++++Greenlee Preserve/Waneka Lake
Barrow's Goldeneye (Randall Siebert) first 12/4
++++Longmont (location unknown)
Chestnut-sided Warbler (Gaynor Nelson) first 12/4

Denver County
++++Marston Reservoir
Common Loon (Mackenzie Goldthwait) last 12/5

Douglas County
++++Salisbury Equestrian Park
Brant --same bird as Twenty mile Pond (Stevens:Kosten) last 12/6
++++Twenty-mile Pond at Bar CCC Park
Brant (Cheri Phillips/Tom Wilberding) (first 11/11) last 11/29
(also check field at northwest corner of Plaza Drive & 20-Mile road; 0.7
miles north of pond)

El Paso County
++++Tenderfoot Draw
Winter Wren (David Tonnessen) first 12/5
++++Prospect Lake at Memorial Park, Colorado Springs
Greater White-fronted Goose (Steve Getty/Kevin Ash) (first 11/25) last

Jefferson County
++++Westminster City Park
Common Redpoll (Kim Mauritz) (first 12/5) 2; last 12/6
++++Robert A. Easton Regional Park
Greater Scaup (David Suddjian) first 12/6
++++Harriman Lake Park
Empidonax Flycatcher --first willows along path from parking lot (David
Suddjian) (first 12/4) last 12/6
Harris's Sparrow --near water facility structure (Suddjian) (first 12/5)
last 12/6
Greater Scaup (Brian Johnson) reported 12/6

Jefferson/Douglas Counties
++++Chatfield Reservoir area
Pacific Loon --downstream Kingfisher Bridge (Cynthia Kristensen) first
Common Loon --downstream/Kingfisher Bridge (Sue Riffe) first 12/2

Larimer County
++++Timnath Reservoir
Lesser Black-backed Gull (5) (Walter Wehtje) first 12/6
++++CSU Environmental Learning Center to Cattail Chorus
Greater White-fronted Goose (9) (Josh Bruening) first 12/6
Black-and-white Warbler --near parking lot (Damion Strommer/Lori Zabel)
(first 11/25) last 12/4
++++Horseshoe Lake
Bonaparte's Gull (1) (Michael Britten) last 12/4
Lesser Black-backed Gull (8) (Michael Britten) last 12/4
++++Welch Reservoir
Red-necked Grebe (Nick Komar:Walter Wehtje) first 12/3
Bonaparte's Gull (45) (Komar:Wehtje) first 12/3

Pueblo County
++++Pueblo Reservoir
Mew Gull --below dam (Mlodinow/John Drummond) (first 11/25) last 12/5
Prairie Warbler --below dam (Leon Bright) first 12/5
Great Black-backed Gull (adult) (Percival/Alan Ketcham) (first 11/7) last
++++Pueblo City Park
Carolina Wren (Percival/David Tonnessen) (first 11/15) last 12/3
Chestnut-sided Warbler (Paul Hurtado/Tonnessen) (first 11/25) last 12/3
(All unless otherwise stated: Arkansas River Trail--east of Pueblo Blvd)

Weld County
++++Greeley Gravel Ponds at 35th Avenue
Fox Sparrow (red) (Aaron Yappert/Joe Mammoser) (first 11/29) last 12/5
(Latest: along Poudre River, 80-90 yards east of the 35th Avenue Bridge)
++++Union Reservoir & area
Pacific Loon (Steve Mlodinow) (first 11/9) last 12/5
Common Loon (Bill Prather/Mlodinow) (first 10/28) last 12/5
Bonaparte's Gull (3) (Mlodinow:Pheneger/Mlodinow) (first 10/17) 31; last
++++Prospect Reservoir
Greater Scaup (2) (Steve Mlodinow) first 12/5
Iceland Gull (2) (Mlodinow) first 12/5
Lesser Black-backed Gull (3) (Mlodinow) first 12/5
Glaucous Gull (Mlodinow) first 12/5
++++Ireland Reservoir #1
Swamp Sparrow (Steve Mlodinow) first 12/5
++++Horse Creek Reservoir
Tundra Swan (6) (Steve Mlodinow) first 12/5
Lapland Longspur (2) (Mlodinow) first 12/5


Baca County
++++Two Buttes Reservoir & area
Winter Wren (4) (David Dowell:Tim Smart/Mark Chavez) (first 11/26) 3;
last 12/3


Logan County
++++Tamarack Ranch Wildlife Area
Purple Finch (Steve Larson) first 12/5
Eastern Screech-Owl (2) (Larson) last 12/5
Eastern Bluebird (2) (Larson) last 12/5

Logan/Sedgwick County
++++Jumbo Reservoir
Surf Scoter (Larson) first 12/5
Glaucous Gull (Steve Larson) first 12/5
Common Loon (Larson) last 12/5


Chaffee County
++++Ice Lake
Pinyon Jay (up to 280) --Private property, view from road (Hagenlocher)
1; last 12/6

Clear Creek County
++++Guanella Pass
White-tailed Ptarmigan (Stevens:Ken Bowen) 6; last 12/1
American Three-toed Woodpecker --Campgrounds (Stevens:Ken Bowen) 1; last

Delta County
++++G50 Road
Great Egret --G50 & CR 1250 (Glenn Pearson/Andrea Robinsong) first (first
11/10) last 12/4

Garfield County
++++Devereux Road & Marijuana Shop
Barrow's Goldeneye (2+) (JoAnn Riggle Potter) first 12/4
++++Rifle Gap Reservoir
Barrow's Goldeneye (JoAnn Riggle) first 12/4

Mesa County
++++James Robb Colorado River State Park
White-winged Scoter (Denise & Mark Vollmar/Carol Ortenzio) (first 11/11)
last 12/3

Montezuma County
++++Narraguinnep Reservoir
White-winged Scoter (Erik Hendrickson/Jim Beatty) (first 11/11) again

Ouray County
++++Ridgway State Park
Surf Scoter (Betty Fenton) first 12/6

San Miguel County
++++Miramonte Reservoir
Barrow's Goldeneye (2) (Hynes & all/George Steele) (first 11/18) last

Summit County
++++Dillon Reservoir
Long-tailed Duck (adult female) (Doug Ward) first 12/2
(Snake River Inlet trailhead; Hwy 6 & Swan Mt Road)

Teller County
Rosy Finches (Cici Lee) first 12/5

Good Birding!

Directions to birding spots and maps on CoBus website:

Amy Davenport, Secretary, Colorado Birding Society Denver, CO
Contact CoBus/Report Interesting Birds: 303-324-7994
Subscribe to "cobirders" by sending blank email to:
cobirders-subscribe AT
Read "cobirders" at: Rare Bird


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