Date: 11/22/17 3:28 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for November 22, 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: 11/21/2017
Adams (Barrow's Goldeneye)
Arapahoe (Greater White-fronted Goose, Bonaparte's Gull)
Arapahoe/Jefferson (Surf Scoter)
Boulder (Swamp Sparrow, Hammond's Flycatcher, Greater White-fronted Goose)
Delta (Great Egret)
Eagle (Barrow's Goldeneye)
Grand (White-winged Scoter)
Jefferson (Black Scoter)
Larimer (Bohemian Waxwing, Common Loon, Lesser Black-backed Gull)
Park (Long-tailed Duck, Common Redpoll)
San Miguel (Barrow's Goldeneye, Common Loon, Sabine's Gull)
Teller (American Three-toed Woodpecker)
Weld (Pacific Loon, Common Loon, Bonaparte's Gull, Common Yellowthroat)


Adams County
++++South Platte Birding Area
Barrow's Goldeneye --south/88th avenue (Dale Pate/John Rutenbeck:Carl
Bendorf) (first 11/20) last 11/21
++++Rocky Mountain Arsenal
Tundra Swan --Lower Derby Lake (Bruce Snyder/Marion & John Warren) (first
11/12) last 11/20
Common Loon --Lake Ladora (Candice Johnson/Warren) (first 10/31) last
Greater Scaup (2) (Michaels/Diane Roberts) (first 11/18) last 11/20

Arapahoe County
++++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/Marion &
John Warren) (first 10/25) last 11/21

Boulder County
++++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
Tennessee Warbler (Leslie S:Christian Nunes) first 11/17
(Later seen by Christian Nunes east at nearby Red Fox Hills Park)
++++Golden Ponds
Greater White-fronted Goose (2) (Luke Pheneger) (first 11/19) 1; last
Swamp Sparrow (Luke Pheneger) (first 11/11) last 11/18
++++Lagerman Reservoir
Iceland Gull (Luke Pheneger) first 11/20
Bonaparte's Gull (Pheneger) last 11/20
++++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/Stevens:Kosten) (first 11/11) last 11/20
(also check field at northwest corner of Plaza Drive & 20-Mile road; 0.7
miles north of pond)
++++Salisbury Equestrian Park
Greater Scaup (2) (Nancy Davis) first 11/20

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Long-eared Owl (2) --banding station area (Aaron Yappert) last 11/19
Curve-billed Thrasher (Yappert) last 11/19
Common Redpoll --banding station area (David Tonnessen) first 11/18
Chestnut-collared Longspur (flyover) (Tonnessen) first 11/18
(All above: El Paso County
Curve-billed Thrasher --headquarters (Tonnessen) last 11/18
(All above: Pueblo County)

Jefferson County
++++Wheat Ridge Greenbelt
Black Scoter (Mark Chavez) first 11/21
Common Yellowthroat (James McCall) reported 11/19

Larimer County
++++Rocky Mountain National Park
Bohemian Waxwing (22) --Bear Lake (Sue Riffe) first 11/21
Common Redpoll (12) --Cub Lake trail (Inez Whipple) reported 11/15
++++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
++++Running Deer Natural Area
Swamp Sparrow (Joe Mammoser/Richard Herrington) (first 11/11) last 11/19
(see directions. also seen on west side of river)
++++Horseshoe Lake
Bonaparte's Gull (4) (Nick Komar/Gwen Moore) (first 11/5) 12; last 11/19
Lesser Black-backed Gull (up to 7) (Gwen Moore) last 11/19
Glaucous-winged Gull (Nick Komar:Walter Wehtje) first (first 11/17) last

Pueblo County
++++Pueblo Reservoir
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
Bonaparte's Gull (Percival) 100+; 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
++++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
Greater White-fronted Goose (7) --Platte River & CR 93 (Bill Kaempfer)
first 11/18
Field Sparrow (Stevens) first 11/17
Eastern Screech-Owl (2) (Stevens) last 11/16
++++Sterling Reservoir and Area
Bonaparte's Gull (up to 25) (Stevens/Erthal) (first 11/16) last 11/19
Common Redpoll --shelter belt along road at west entrance
(Kaempfer:Vanderpoel) first 11/18

Logan/Sedgwick Counties
++++Jumbo Reservoir
Greater White-fronted Goose (1+) (Washburn & Thompson) last 11/18
Black-legged Kittiwake (Cole Wild/Washburn & Thompson) (first 11/14) last
Iceland Gull (Larson/Washburn & Thompson) (first 11/15) last 11/18
(latest on Gulls: southeast corner)
Common Loon (12) (Nick Moore/Stevens) (first 11/9) 2; last 11/18
(Many gulls will visit throughout the day the outlet at northeast corner)

Logan/Washington Counties
++++Prewitt Reservoir area
Bonaparte's Gull (Stevens/Queszada) (first 11/18) 3; last 11/19
Eastern Screech-Owl (Stevens) last 11/17

Morgan County
++++Riverside Park; Fort Morgan
Greater White-fronted Goose (Riley Morris) first 11/19
++++Jackson Reservoir & area
White-throated Sparrow (2) (Mlodinow/Morris) (first 9/30) last 11/19
Harris's Sparrow (Dowell/Stevens) (first 10/12) last 11/18
(all above: south of Pelican campsite 89)
Long-eared Owl (Stevens) last 11/18


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

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
++++Highline Lake State Park
Tundra Swan (2 adults, 6 imm) (Cary Atwood/Ortenzio & all) (first 11/10)
10; last 11/18
Common Loon (2) --Mack Mesa Lake (Lee Stigen/Ortenzio) (first 11/3) 2;
last 11/18
++++James Robb Colorado River State Park (Fruita section)
Black Phoebe (Carol Ortenzio & all) last 11/18

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/Myron Gerhard) (first 11/4) last 11/20
Snow Bunting --turnoff/Lazy Boy:Rocking Chair (Myron Gerhard) first
Snow Bunting (Nick Moore/Walbek & all) (first 11/18) last 11/19
Pacific Loon (Nick Moore/Walbek & all) (first 11/18) last 11/19
Common Loon (Kellner/Wabek & all) (first 10/23) last 11/19
Surf Scoter (24) (Joey Kellner/Walbek & all) (first 10/29) 5; last 11/19
White-winged Scoter (4) (Joey Kellne/Walbek & all) (first 10/29) 1; last
Barrow's Goldeneye (4) (McCloy/Mlodinow) (first 11/11) last 11/19
Greater Scaup (Mlodinow) first 11/19
++++Antero Reservoir
Greater Scaup (Mlodinow) first 11/19
Bonaparte's Gull (1) (Scott Somershoe/Mlodinow) first (first 10/29) last
Pacific Loon (Somershoe:Shoup/Aaron Yappert) (first 11/9) last 11/19
Common Loon (6) (Joey Kellner & all/Yappert) (first 10/29) 2; last 11/19
Tundra Swan (3) (Somershoe:Shoup/Mlodinow) (first 11/9) 21; last 11/19
++++Spinney Mountain Reservoir
Tundra Swan (Stevens:Michaels/Moore) (first 11/1) 11; last 11/18

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
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