Date: 11/23/17 3:21 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for November 23, 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: 11/22/2017
Adams (Common Loon, Greater Scaup, Iceland Gull)
Arapahoe (Surf Scoter, White-winged Scoter, Black Scoter, Bonaparte's Gull,
Lesser Black-backed Gull, Common Loon, Rusty Blackbird)
Arapahoe/Jefferson (Surf Scoter)
Boulder (Winter Wren, Bonaparte's Gull)
Douglas (Brant, Greater Scaup)
Jackson (American Three-toed Woodpecker)
Jefferson (Black Scoter, Greater White-fronted Goose, Greater Scaup)
Jefferson/Douglas (Bonaparte's Gull)
Larimer (Greater White-fronted Goose)
Park (Long-tailed Duck, Barrow's Goldeneye, Gray-crowned Rosy Finch,
Brown-capped Rosy Finch)
Pueblo (White-winged Scoter, Bonaparte's Gull)
Weld (Lesser Black-backed Gull)


Adams County
++++Rocky Mountain Arsenal
Common Loon --Lake Ladora (Candice Johnson/Washburn:Thompson) (first
10/31) last 11/22
Greater Scaup (2) (Michaels/Diane Roberts) (first 11/18) 5; last 11/22
Iceland Gull (Diane Roberts) reported 11/22
++++South Platte Birding Area
Barrow's Goldeneye --south/88th avenue (Dale Pate/John Rutenbeck:Carl
Bendorf) (first 11/20) last 11/21

Arapahoe County
++++Aurora Reservoir Area
Surf Scoter (Dave King:Jacob Washburn/Michaels) (first 11/10) again 11/22
White-winged Scoter (Washburn/Michaels) (first 11/10) again 11/22
Black Scoter (Michaels) first 11/22
Bonaparte's Gull (Stevens:Kosten/Michaels) (first 10/28) last 11/22
Lesser Black-backed Gull (Dave King/Michaels) (first 11/5) last 11/22
Common Loon (Washburn/Michaels) (first 10/15) last 11/22
++++Cherry Creek Reservoir
Rusty Blackbird (Karen Hinz) reported 11/22
Bonaparte's Gull (Terry Michaels) (first 10/19) 4; last 11/21
++++Aurora Hills Golf Course & Bicentennial Park
Greater White-fronted Goose --Hole 12/east side of GC (Dave King) first
may be observed from bike path between Golf Course & Bicentennial Park)
Bonaparte's Gull (Terry Michaels) (first 10/19) 4; last 11/21

Arapahoe/Jefferson Counties
++++South Platte Park Reservoir & Area
Surf Scoter (2) --southwest corner, Jefferson Cty (Bart Deferme/Dale
Pate) (first 10/25) last 11/22

Boulder County
++++Old St. Vrain Road
Winter Wren (Carl Starace) first 11/22
++++Lagerman Reservoir
Bonaparte's Gull (4) (Pheneger) last 11/22
Iceland Gull (Luke Pheneger) first 11/20
++++Sale Lake
Swamp Sparrow (Ernest Crvich/Stevens:Kosten) (first 11/20) last 11/21
++++Twin Lakes Open Space
Hammond's Flycatcher (Jeff Parks/John Vanderpoel) (first 11/19) last 11/21
Nashville Warbler (Todd Deininger:Aaron Yappert/Leslie S) (first 11/18)
last 11/20
++++Golden Ponds
Greater White-fronted Goose (2) (Luke Pheneger) (first 11/19) 1; last
Swamp Sparrow (Luke Pheneger) (first 11/11) last 11/18
++++Greenlee Preserve/Waneka Lake
Swamp Sparrow (Ted Floyd) (first 11/15) last 11/20

Denver County
++++Garland Park
Greater White-fronted Goose (Don Beltz) first 11/20

Douglas County
++++Twenty-mile Pond at Bar CCC Park
Brant (Cheri Phillips/Mark Amershek:Nancy Davis) (first 11/11) last 11/22
(also check field at northwest corner of Plaza Drive & 20-Mile road; 0.7
miles north of pond)
Greater Scaup (6) (Mark Amershek:Nancy Davis) first 11/22
++++Salisbury Equestrian Park
Greater Scaup (2) (Nancy Davis/Brian Johnson) (first 11/20) last 11/22
++++Walker Gravel Pit
Greater Scaup (2) (Cheri Phillips/Mark Amershek) (first 11/11) 3; last

Jefferson County
++++Wheat Ridge Greenbelt
Black Scoter (Mark Chavez/Loch Kilpatrick) (first 11/21) last 11/22
++++Clement Park
Greater White-fronted Goose (Soctt Somershoe/Brian Johnson) (first 11/11)
last 11/22
++++Belmar Historic Park
Greater White-fronted Goose (Chris Gilbert) last 11/22
Greater Scaup (Gilbert) first 11/22

Jefferson/Douglas County
++++Chatfield Reservoir area
Bonaparte's Gull (9) (Scott Hollis) last 11/22

Larimer County
++++Equalizer Lake
Greater White-fronted Goose (Robert Beauchamp) first 11/22
++++Woods Lake
Greater White-fronted Goose (Gary Lefko) first 11/22
++++Rocky Mountain National Park
Bohemian Waxwing (22) --Bear Lake (Sue Riffe) first 11/21
++++Boyd Lake State Park
Common Loon (2) (James Mccall/David Dowell) (first 11/14) last 11/21
Lesser Black-backed Gull (4) (David Dowell) last 11/21
Glaucous-winged Gull (Dowell) first 11/21
++++Larimer County Landfill
Lesser Black-backed Gull (3) (Joshua Smith) (first 11/2) 2; last 11/21
(Restricted access, see directions; closed on Sundays, no view from
outside of property)
++++Lake Loveland
Lesser Black-backed Gull (7) (Komar/Michael Britten) 1; last 11/20
++++Rolland Moore Park
Greater White-fronted Goose (Walter Wehtje) first 11/20
++++Prospect Ponds Natural Area
Rusty Blackbird (David Wade) first 11/20

Pueblo County
++++Lake Beckwith
White-winged Scoter (Dve Silverman) (first 11/21) last 11/22
++++Pueblo Reservoir
Bonaparte's Gull (Kevin Ash) 8; last 11/22
Great Black-backed Gull (adult) (Brandon Percival) (first 11/7) last 11/20
Lesser Black-backed Gull (adult) (Percival) last 11/20
Iceland Gull (Percival) (first 11/12) last 11/20
Common Loon (up to 30) (Percival) 5; last 11/20
++++Pueblo City Park
Yellow-throated Warbler --northeast corner (Mark Yaeger) first 11/19
Yellow-bellied Sapsucker (Mark Yaeger) first 11/17

Weld County
++++Windsor Lake
Lesser Black-backed Gull (Rutherford/Megan Miller) (first 11/11) again
++++Union Reservoir & area
Pacific Loon (Mlodinow) (first 11/9) last 11/21
Common Loon (Bill Prather/Mlodinow) (first 10/28) last 11/21
Bonaparte's Gull (3) (Mlodinow:Pheneger/Mlodinow) (first 10/17) 24; last
Common Yellowthroat (Mlodinow) (first 11/11) last 11/21


Logan County
++++Tamarack Ranch Wildlife Area
Red-bellied Woodpecker (8) (Pablo Quezada) last 11/19
Eastern Bluebird (Quezada) last 11/19
Northern Cardinal (Pablo Quezada) last 11/19
++++Sterling Reservoir and Area
Bonaparte's Gull (up to 25) (Stevens/Erthal) (first 11/16) last 11/19


Chaffee County
++++McPhelemy Park
Lewis's Woodpecker (Renee Casias) last 11/19

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

Delta County
++++G50 Road
Great Egret (Glenn Pearson/Betty Fenton) first (first 11/10) last 11/21

Eagle County
++++Frying Pan River, outside of Basalt
Barrow's Goldeneye (7 male, 8 female) --pond by Cap K (Louise
Glaser/Zerbi) (first 11/19) 8; last 11/21

Eagle/Pitkin Counties
++++Ruedi Reservoir
Barrow's Goldeneye (male) (Filby/Vic Zerbi) (first 10/31) 7; last 11/21
(1, Pitkin County; 6, Eagle County)

Fremont County
++++Arkansas Riverwalk
Harris's Sparrow --MacKenzie to Raynolds Avenues (Joel Adams/Jerry
DeBoer) (firat 11/19) last 11/20
Wilson's Warbler --MacKenzie to Raynolds Avenues (Rich Miller) last 11/19

Grand County
++++Shadow Mountain Reservoir
White-winged Scoter (Joey Angstman) first 11/21

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

Mesa County
++++Vega State Park
White-winged Scoter (6) (Denise & Mark Vollmar) (first 11/8) 1; last 11/19
++++Grand Mesa North
Northern Pygmy-Owl --Powderhorn Ski Area (Denise & Mark Vollmar) last

Montrose County
++++East 5th Avenue, Nucla
Pinyon Jay (53) (Dexter:Wright) (first 9/15) 27; last 11/19

Park County
++++Eleven Mile Reservoir
Long-tailed Duck (Chris Owens & all/David Tonnessen) (first 11/4) last
Barrow's Goldeneye (4) (McCloy/Tonnessen) (first 11/11) 2; last 11/22
Snow Bunting --turnoff/Lazy Boy:Rocking Chair (Myron Gerhard) first 11/20
Snow Bunting --turnoff/Lazy Boy:Rocking Chair (Myron Gerhard) first 11/20
Gray-crowned Rosy Finches (15) (Norm Lewis) first 11/22
Brown-capped Rosy Finch (3) (Norm Lewis) first 11/22

Routt County
++++Stagecoach Recreational Area
Trumpeter Swan (JoAnn Potter Riggle) last 11/19
White-winged Scoter (2) (Tom Litteral/Potter Riggle) (first 11/12) last
Surf Scoter (Litteral/Potter Riggle) (first 11/16) last 11/19
Barrow's Goldeneye (2) (Litteral/Potter Riggle) (first 11/12) 1; last
Greater Scaup (Tresa Moulton/JoAnn Riggle) (first 11/12) 4; last 11/19

San Miguel County
++++Miramonte Reservoir
Barrow's Goldeneye (2) (Hynes & all/George Steele) (first 11/18) last
Common Loon (Eric Hynes/George Steele) (first 10/22) 1; last 11/21
Sabine's Gull (1st winter) (Hynes & all/George Steele) (photographed
11/18) last 11/21

Summit County
++++Blue River Water Treatment Plant
Barrow's Goldeneye (Stevens & all) first 11/19
++++Dillon Reservoir
Barrow's Goldeneye (2+) (Tom Wilberding) first 11/19

Teller County
++++Crags Trail
American Three-toed Woodpecker (Kevin Ash) last 11/20
++++Manitou Lake
White-winged Scoter (male) (Robb Hinds) first 11/19

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:

Join us on Facebook!