Date: 12/3/17 3:44 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for December 3, 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: 12/1/2017
Adams (Barrow's Goldeneye, Common Loon)
Arapahoe (Rusty Blackbird, Hermit Thrush, Gray Catbird)
Boulder (Hammond's Flycatcher, Greater Scaup, Swamp Sparrow, European
Broomfield (Common Yellowthroat)
Jefferson (Lesser Black-backed Gull)
Jefferson/Douglas (Common Loon)
Larimer (Iceland Gull, Lesser Black-backed Gull, Bonaparte's Gull,
Glaucous-winged Gull, Greater White-fronted Goose, American Three-toed
Woodpecker, Eastern Screech-Owl)
Montezuma (White-winged Scoter)
Park (Gray-crowned Rosy Finch, Black Rosy Finch)
Pueblo (Chestnut-sided Warbler, Lesser Black-backed Gull)
Summit (Long-tailed Duck)
Weld (Snow Bunting, Sharp-tailed Grouse, Greater Scaup, Rusty Blackbird,
Pacific Loon, Bonaparte's Gull, Iceland Gull, Lesser Black-backed Gull,
Greater White-fronted Goose, Eastern Screech-Owl, Fox Sparrow)


Adams County
++++South Platte Birding Area
Barrow's Goldeneye --south/88th avenue (Dale Pate/John Breitsch:Christine
Alexander) (first 11/20) 2; last 12/2
Pacific Loon --89th Avenue Pond (Chuck Aid) first 11/28
++++Rocky Mountain Arsenal
Common Loon --Lake Ladora (Candice Johnson/Cynthia Kristensen) (first
10/31) last 12/2
++++First Creek Trail
Harris's Sparrow (John Breitsch/Terry Michaels) (first 11/29) last 12/1
(1/4 to 1/2 mile west of Buckley Road)
++++Barr Lake
White-throated Sparrow --west side/mile 3.0 (Stevens) first 11/30
++++Banner Lakes Wildlife Area
Long-eared Owl (2) (Stevens:Michaels) last 11/30

Arapahoe County
++++Blackmer Lake area/Highline Canal Trail
Hermit Thrush (Jared Del Rosso) first 12/2
Gray Catbird (Jared Del Rosso) first 12/2
++++Aurora Reservoir
Black Scoter (Michaels/Stevens) (first 11/22) last 12/1
Mew Gull --Senac Cove (Richard Stevens) first 12/1
Lesser Black-backed Gull --shore at mile 2.5 (Dave King/Stevens) (first
11/5) last 12/1
++++Cherry Creek Reservoir
Rusty Blackbird (2) (Alan Mart) reported 12/1
++++South Platte Park
Greater Scaup (2) --C470 area (Christopher Warneke/Terry Michaels) (first
11/24) 5; last 12/1
++++Clement Park
Greater White-fronted Goose (Soctt Somershoe/Doug Kibbe) (first 11/11)
last 11/30

Boulder County
++++Boulder Creek at 75th Street
Swamp Sparrow (Steve Frye) first 12/2
European Goldfinch --west of parking lot (Frye) first 12/2
++++Twin Lakes Open Space
Hammond's Flycatcher (Jeff Parks/Peter Gent) (first 11/19) last 12/2
++++Walden Ponds Map
Greater Scaup (2) (Ron Podhajsky) first 12/2
Swamp Sparrow --Boulder Creek/75th Street (Steve Frye) first 12/2

Broomfield County
++++Plaster Reservoir
Common Yellowthroat (Matt Hofedtz) last 12/2

Douglas County
++++Salisbury Equestrian Park
Greater Scaup (2) (Nancy Davis/Cynthia Kristensen) (first 11/20) 1; last
++++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
++++Prospect Lake at Memorial Park, Colorado Springs
Greater White-fronted Goose (Steve Getty/Alan & Mary Lynne Ketcham)
(first 11/25) last 12/1
Mew Gull (Drummond) first 11/30

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Common Redpoll --banding station area (David Tonnessen) (first 11/18)
again 11/30

Jefferson County
++++Tucker Lake
Lesser Black-backed Gull (Aaron Shipe) first 12/2
++++Robert A. Easton Regional Park
White-throated Sparrow (Terry Michaels) last 12/1

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

Larimer County
++++Larimer County Landfill
Iceland Gull (Nick Komar) last 12/2
Lesser Black-backed Gull (Komar) last 12/2
(Restricted access, see directions; closed on Sundays, no view from
outside of property)
++++Lake Loveland
Lesser Black-backed Gull (Komar) 1; last 12/2
Iceland Gull (Michael Britten) (first 11/27) last 12/1
++++Loveland Reservoir
Bonaparte's Gull (Nick Komar) (first 11/15) last 12/2
++++Lonetree Reservoir Wildlife Area
Bonaparte's Gull (10) (Nick Komar) first 12/2
++++Boyd Lake State Park
Glaucous-winged Gull (1st cycle) (David Dowell/Komar) (first 11/21) again
++++Equalizer Lake
Greater White-fronted Goose (Robert Beauchamp/Nick Komar) (first 11/22)
last 12/2
++++Rocky Mountain National Park
American Three-toed Woodpecker (1) --Bear Lake (Fawn Simonds) last 12/2
++++Grandview Cemetery
Eastern Screech-Owl (Kaden Neibauer) last 12/2
++++Dry Creek Reservoir
Red-necked Grebe (Nick Komar:Walter Wehtje/David Wade) (first 11/29) last
++++Spring Canyon Community Park
Eastern Screech-Owl (Kevin Keirn) last 11/30
++++Lory State Park
Northern Pygmy-Owl --top of Howard trail (Libby Edwards) first 11/30
++++College Lake
Greater Scaup (Nick Komar) (first 11/27) last 11/30

Pueblo County
++++Pueblo City Park
Chestnut-sided Warbler (Paul Hurtado/Van Truan) (first 11/25) last 12/2
Yellow-throated Warbler --northeast corner (Mark Yaeger/Dexter:Wright)
(first 11/19) last 11/30
Barrow's Goldeneye (2) (Hurtado/Alan Ketcham) (first 11/25) 3; last 11/29
(Arkansas River Trail--east of Pueblo Blvd)
++++Pueblo Reservoir
Lesser Black-backed Gull (Kevin Ash) last 12/2
Great Black-backed Gull (adult) (Percival/Dexter:Wright) (first 11/7)
last 11/30
Curve-billed Thrasher --North marina area (Dexter:Wright) last 11/30
++++Lake Beckwith
White-winged Scoter (Dave Silverman) (first 11/21) last 12/1

Weld County
++++Adams and Bunker Reservoirs
Snow Bunting (3) (Steve Mlodinow/Pheneger) (first 11/28) last 12/2
Greater White-fronted Goose (Steve Mlodinow/Sue Riffe) (first 11/28) last
++++County Road 111 (btw CR 124-136)
Sharp-tailed Grouse (1, released bird) (Pheneger) last 12/2
Snow Bunting (Pheneger) first 12/2
Gray-crowned Rosy Finch (5) (Mlodinow) reported 11/28
Longspurs (3 species) (Mlodinow) first 11/28
++++Frank Wildlife Area & Gravel Ponds
Greater Scaup --gravel ponds (Mlodinow) first 12/2
Rusty Blackbird --Wildlife Area (Mlodinow) first 12/2
++++Union Reservoir & area
Pacific Loon (Steve Mlodinow/John Rutenbeck) (first 11/9) last 12/2
Bonaparte's Gull (3) (Mlodinow:Pheneger/Rutenbeck) (first 10/17) 28; last
Common Loon (Bill Prather/Mlodinow) (first 10/28) last 11/30
Common Yellowthroat (Mlodinow) (first 11/11) last 11/21
Lesser Black-backed Gull (Yappert) first 11/18
++++Windsor Reservoir
Iceland Gull (Mlodinow) first 12/2
Lesser Black-backed Gull (Gene Rutherford/Mlodinow) (first 11/11) 3; last
++++St. Vrain State Park
Greater White-fronted Goose (5) (Bill Schmoker) first 12/2
++++Greeley Gravel Ponds at 35th Avenue
Greater White-fronted Goose (Gary Lefko/Gene Rutherford) (first 11/27)
last 12/2
Eastern Screech-Owl (Mlodinow) first 12/2
Fox Sparrow (red) (Gene Rutherford) reported 12/2
Fox Sparrow (red) (Aaron Yappert) first 11/29
Varied Thrush (Shawn Mason) first 11/28
++++Windsor Lake
Greater White-fronted Goose (3) (Mlodinow) first 12/2


Baca County
++++County Road C
Pinyon Jay (120) --btw Oklahoma Line & CR 8 (Kathy Mihm-Dunning) first
++++Two Buttes Reservoir & area
Winter Wren (4) (David Dowell:Tim Smart/Mihm-Dunning) (first 11/26) 1;
last 11/28
Harris's Sparrow (4) (David Dowell:Tim Smart/Mihm-Dunning) (first 11/26)
last 11/28

Crowley County
++++Lake Henry
Chihuahuan Raven (Dexter:Wright) last 11/30
Bonaparte's Gull (12) (Brooke/Kathy Mihm-Dunning) (first 11/26) 1; last

Las Animas County
++++Cottonwood Canyon
Winter Wren (Mihm-Dunning) last 11/28

Otero County
++++Rocky Ford Wildlife Area
Bewick's Wren (3) (David Dowell) last 11/30
Eastern Bluebird (David Dowell) first 11/30
Common Redpoll (4) (Dowell) first 11/30
Northern Cardinal (David Dowell) first 11/30


Morgan County
++++Jackson Reservoir & area
Long-eared Owl (Stevens:Michaels) 1; last 11/29
Swamp Sparrow (Stevens:Michaels) first 11/28
White-throated Sparrow (2) (Mlodinow/Stevens:Michaels) (first 9/30) last
Eastern Screech-Owl (Stevens:Michaels) last 11/28


Chaffee County
++++Sands Lake Wildlife Area
Barrow's Goldeneye (2) (Jack Harlan/Jeff Guy) (first 11/17) 12/1
++++Ice Lake
Pinyon Jay (up to 280) --Private property, view from road (Hagenlocher)
1; last 12/1
Barrow's Goldeneye (4) (Christian Hagenlocher) first 11/30

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
++++Loveland Pass
White-tailed Ptarmigan (1) (Stevens & all) last 11/19
(hill north of first pullover south of Pass and west of Hwy 9)

Garfield County
++++Rifle Gap Reservoir
Barrow's Goldeneye (JoAnn Riggle) first 11/29

Grand County
++++Shadow Mountain Reservoir
White-winged Scoter (Joey Angstman/Paul Slingsby) (first 11/21) last 12/1
Barrow's Goldeneye (7) (Slingsby & all) first 12/1
++++Lake Granby
Barrow's Goldeneye (6) (Slingsby & all) first 12/1

Jackson County
++++County Road 26b
Greater Sage-Grouse (1) --CR 26b (Stevens:Kosten) last 11/26
++++Colorado State Forest
American Three toed Woodpecker
(1) --Ranger Lakes (Stevens:Kosten) last 11/23
(m) --Across Hwy 14/north of Colorado State Forest Visitor's Center
(Stevens:Kosten) last 11/22
Boreal Owl
(1) --Ruby Jewell Road (Washburn:Simmons/Stevens:Kosten) (first 5/8) last
(2) --Ranger Lakes area (Stevens:Michaels) last 11/12

Mesa County
++++Whitewater Gravel Ponds
Long-tailed Duck (Coen Dexter:Brenda Wright/Carol Ortenzio) (first 11/25)
last 11/30
++++Grand Junction Wildlife Area
White-throated Sparrow --southeast corner (Mike Henwood) last 11/30
Western Screech-Owl (Katey Buster) last 11/30

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

Montrose County
++++Old River Road
Pinyon Jay (280) (George Steele) first 11/30

Park County
++++Eleven Mile Reservoir
Gray-crowned Rosy Finch (125) (Jack & Ryan Bushong/Richard Bunn) (first
11/25) last 12/1
Black Rosy Finch (2) (Richard Bunn) first 12/1

Pitkin County
++++Ruedi Reservoir
Barrow's Goldeneye (male) (Filby/Vic Zerbi) (first 10/31) 2; last 12/1
Barrow's Goldeneye (3) --Farm Pond on road to Reservoir (Lousie
Glaser/Zerbi) (first 11/11) 23; last 12/1

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

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
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