Date: 9/26/18 4:26 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 26, 2018
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: 9/25/2018
Boulder (Pectoral Sandpiper)
Douglas (Broad-winged Hawk)
El Paso (White-throated Sparrow)
Huerfano (Sage Thrasher, White-throated Sparrow)
Larimer (Mexican Duck, White-throated Sparrow, Townsend's Warbler)
Cheyenne (Cassin's Kingbird)
Logan (Sabine's Gull, PHILADELPHIA VIREO)
Morgan (Long-eared Owl, Townsend's Warbler)
Chaffee (Pinyon Jay)
Clear Creek (Barrow's Goldeneye)
Fremont (Black Phoebe, Pinyon Jay, Curve-billed Thrasher, Sage Thrasher)
La Plata (Cassin's Vireo)
Montrose (Black Phoebe, Sagebrush Sparrow)
Park (Red-necked Phalarope, Sabine's Gull, Common Tern, Chestnut-collared
Longspur, Yellow-throated Warbler)
San Miguel (Nashville Warbler)


Adams County
++++Barr Lake
Pectoral Sandpiper --off banding station (Ian Redfield) last 9/23
Cassin's Vireo (Ian Redfield) last 9/23
Red-eyed Vireo (McBurney/Redfield) (first 9/19) last 9/23
++++Rocky Mountain Arsenal
Sage Thrasher (Vince Howard) last 9/23
Cassin's Kingbird (2) (Sheeter) last 9/22

Adams/Denver Counties
++++First Creek Trail
Cassin's Vireo --Adams Cty (John Breitsch) first 9/23
Cassin's Vireo --Denver Cty (John Breitsch) first 9/23

Arapahoe County
++++Aurora Reservoir & area
Sabine's Gull --southeast corner (Stevens:Kosten) first 9/24
Probable Bonaparte's Gull (Stevens:Kosten) first 9/24

Boulder County
++++Walden Ponds Map
Pectoral Sandpiper (Pheneger:Zmolek/Haskell:Lehman) (first 9/24) last 9/25
++++Pleasant View Marsh
Red-eyed Vireo (Bill Kaempfer) first 9/24
Prothonotary Warbler (Ernest Crvich/Peter Burke) (first 9/22) last 9/23
Townsend's Warbler (Christian Nunes) first 9/23

Broomfield County
++++Plaster Reservoir
American Bittern --southeast side (Eric Zorawowitz/Linda Lee) (first
9/15) last 9/23

Denver County
++++Bluff Lake Nature Area
Sage Thrasher (George Ho) first 9/24
Green Heron (George Ho/Dave King) (first 6/21) last 9/21

Douglas County
++++Castlewood Canyon Road Map
Broad-winged Hawk (Karen Metz) reported 9/25
++++Noodle Head Trail Area, Pike National Forest
Sage Thrasher (2) (Greg Schrab) first 9/23
Townsend's Warbler (Greg Schrab) first 9/23
(Above: west of Hwy 67, south/old logging road/ btw Noodle Head Trail &
Sugar Creek)

El Paso County
++++Starsmore Discovery Center Map
White-throated Sparrow (Aaron Rogers) first 9/25

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Eastern Phoebe (John Drummond:Ketcham) first 9/24
Cassin's Vireo (Kim Geissler/Drummond) (first 9/8) last 9/24
Philadelphia Vireo (Geissler/John Drummond) (first 9/22) last 9/24
Curve-billed Thrasher (Drummond) last 9/24
Sage Thrasher (Drummond) last 9/24
Northern Mockingbird (2) (Drummond) last 9/24
Ovenbird (2) (Christine Alexander/Drummond) (first 9/23) 2; last 9/24
Nashville Warbler (Drummond) first 9/24
(above: banding station unless stated elsewhere, El Paso County)
Ladder-backed Woodpecker (John Drummond) last 9/24
Sedge Wren (John Drummond) last 9/24
Curve-billed Thrasher (Drummond) last 9/24
(all above: Headquarters, Pueblo County)
Sedge Wren --below southeast side of dam (David Tonnessen) first 9/21
(all above: Rose Pond, Pueblo County)

Huerfano County
++++Orlando Reservoir #2
Sage Thrasher (2) (Walker) first 9/25
White-throated Sparrow (Christian Walker) first 9/25

Jefferson County
++++Wellington Lake
Northern Pygmy-Owl (Lindsay Purifoy) first 9/24
American Three-toed Woodpecker (Lindsay Purifoy) first 9/24
Flammulated Owl (Purifoy) last 9/23

Larimer County
++++Horseshoe Lake Map
Mexican Duck --pond north of lake (Nick Komar/Joshua Smith) (first 9/22)
last 9/25
Mew Gull --pond north of lake (Nick Komar) (first 9/19) last 9/22
++++Grandview Cemetery Map
White-throated Sparrow (1st winter) (Leatherman) first 9/25
Townsend's Warbler (David Wade/Leatherman) (first 9/16) last 9/25
Broad-winged Hawk (David Leatherman/Joe Kipper) (first 9/19) 2; last 9/24
++++Rocky Mountain National Park
American Three-toed Woodpecker (2) --Hidden Valley Creek (Nathan Senner)
last 9/24
++++Boyd Lake State Park
Lesser Black-backed Gull --Seven Lakes Park (John Shenot) first 9/23
++++Duck Lake
Red-necked Phalarope (John-Edd Brown/Lori Pivonka) (first 9/16) 3; last

Pueblo County
++++Runyon Lake
Black Phoebe (Mark Yaeger) first 9/24
Eastern Phoebe (Mark Yaeger) first 9/24
++++Pueblo Reservoir
Ladder-backed Woodpecker --sailboard launch area (M.OB.) first 9/24
Curve-billed Thrasher --south marina area (M.OB.) last 9/24

Weld County
++++Norma's Grove
Long-eared Owl --CR 100/east/CR 57 (Dean Shoup) first 9/23
Eastern Bluebird (Gene Rutherford) first 9/23
++++Crow Valley
Least Flycatcher (Joey Kellner/Dean Shoup) (first 9/14) last 9/23
Black-throated Gray Warbler (Kellner:Shoup) first 9/23
++++Pawnee National Grasslands area
Chestnut-collared Longspur (9) --CR 105/north/CR 80 (Dean Shoup) first


Bent County
++++John Martin Reservoir Map
Buff-breasted Sandpiper (2) --Clayton Point (Duane Nelson) first 9/25
(East of CR 20, turn south off CR JJ, go south then east to gravel island)

Cheyenne County
++++Big Sandy Creek at CR 20
Cassin's Kingbird (2) (David Suddjian) first 9/25
++++County Road 48 at CR DD
Cassin's Kingbird (Suddjian) first 9/25

Prowers County
++++Lamar Community College
Chestnut-sided Warbler (Jill Smith) first 9/24
Ruby-throated Hummingbird 2 male, 1 female; (Dorothy Russell) (first
9/16) 1; last 9/24


Kit Carson County
++++Flagler Reservoir
Possible Yellow-bellied Flycatcher (Stevens:Michaels) reported 9/23
Cassin's Vireo (Stevens:Michaels) first 9/23
++++Fairview Cemetery, Burlington
Broad-winged Hawk (Stevens:Michaels) first 9/23

Logan County
++++North Sterling Reservoir and Area
Sabine's Gull (David Dowell/Stevens) (first 9/22) last 9/25

Morgan County
++++Jackson Reservoir & area
Long-eared Owl (Stevens) last 9/25
Townsend's Warbler --west Campgrounds (Stevens) first 9/25
Semipalmated Plover --north side (Dean Shoup) (first 9/2) 1; last 9/23

Yuma County
++++Bonny Reservoir Area
Burrowing Owl (2) --Pipit Hill (David Dowell) first 9/23
Red-headed Woodpecker (2) --Fosters Grove (Washburn:Thompson/Dowell) last
Northern Cardinal (Dowell) last 9/23
Eastern Phoebe --wagon wheel (Dean Shoup/Stevens:Michaels) (first 9/16)
last 9/22
Palm Warbler (Stevens:Michaels) first 9/22
Nashville Warbler (Stevens:Michaels) first 9/22
Eastern Screech-Owl (Stevens:Michaels) last 9/22
(Bonny Reservoir Wildlife Area)
Red-headed Woodpecker (Dowell) last 9/23
Blue-headed Vireo (Stevens:Michaels) first 9/22
Mourning Warbler (Stevens:Michaels) first 9/22
Eastern Bluebird (Stevens:Michaels) last 9/22
Gray-cheeked Thrush (Stevens:Michaels) first 9/22
Yellow-billed Cuckoo (Stevens:Michaels) last 9/22
Magnolia Warbler (Stevens:Michaels) first 9/22
Eastern Screech-Owl (Stevens:Michaels) last 9/22
(Hale Ponds)


Alamosa County
++++Blanca Wetlands
Marbled Godwit (2) (David Dowell/Gary Koehn) (first 9/17) last 9/23
Red-necked Phalarope (8) (Dowell/Koehn) (first 9/17) 2; last 9/23
Sage Thrasher (3) (Dowell/Koehn) (first 9/17) last 9/23

Archuleta County
Pagosa Springs & area
Lewis's Woodpecker (4) --Forest Road 012, Blue Creek Road (Anthony Orona)
last 9/24

Chaffee County
++++Chaffee County
Pinyon Jay (1) --Buena Vista Nature Trail (Kevin DeBoer) last 9/25

Clear Creek County
++++Mt. Evans Road Map
Barrow's Goldeneye (up to 11) --Echo Lake (Nathan Senner/Christian
Walker) (first 5/2) 3; last 9/25
++++Guanella Pass
White-tailed Ptarmigan --Bierstadt trail (Frank Farrell) 6; last 9/23

Fremont County
++++Arkansas Riverwalk
Black Phoebe --Sells Pond to Raynolds Avenue (Jerry DeBoer) last 9/25
Eastern Phoebe --Sells Pond to Raynolds Avenue (Catherine Olin) last 9/24
++++Brush Hollow Wildlife Area Map
Pinyon Jay (2) (Alan & MaryLynne Ketcham) first 9/25
Curve-billed Thrasher (Ketcham) last 9/25
Sage Thrasher (Ketcham) last 9/25
++++Tunnel Drive area
Rufous-crowned Sparrow (4) (Kibbe:Wagner) last 9/22

Hinsdale County
++++Brown Lakes Wildlife Area
Gray Flycatcher (Kathy Mihm-Dunning) first 9/24

La Plata County
++++Pastorius Reservoir Map
Cassin's Vireo (James Beatty) first 9/25
++++Vallecito Reservoir
Sabine's Gull (imm) (Jason St. Pierre) first 9/22

Mesa County
++++Connected Lakes State Park Area
Gray Vireo (Adam Cupito) first 9/24
++++Horsethief Canyon Wildlife Area
Green Heron (Mike Henwood) first 9/24
Gray Flycatcher (Henwood) last 9/24
Cassin's Vireo (Douglas Diekman/Henwood) (first 9/18) last 9/24
Sage Thrasher (David Price) first 9/24

Montrose County
++++Airport Lake Area Map
Black Phoebe --Rose Garden (Horn:Harris/Dexter:Wright) (first 7/13) last
Sagebrush Sparrow (6) (Dexter:Wright) first 9/25
++++Nucla Town Reservoir
Red-necked Phalarope (Dexter:Wright) first 9/24
Gray Flycatcher (Dexter:Wright) first 9/24
Pinyon Jay (52) --East 5th Avenue (Dexter:Wright) last 9/24
++++Ridgway State Park
Gray Vireo --Dallas Creek (Wright:Dexter) first 9/23
Sage Thrasher (Wright:Dexter) first 9/23
Nashville Warbler --Dallas Creek (Adam Cupito/Wright:Dexter) (first 9/6)
3; last 9/23
++++Yankee Boy Basin
Brown-capped Rosy Finch (2+) --Mt Sneffels (CoBus Groups/KW) (first 6/30)
last 9/23

Park County
++++Antero Reservoir Map
Red-necked Phalarope (Steve Mlodinow) first 9/25
Sabine's Gull (2) (Mlodinow) first 9/25
++++Eleven Mile State Park Map
Sabine's Gull (David Tonnessen/Mlodinow) (first 9/17) last 9/25
Common Tern (13) (Mlodinow) first 9/25
++++Spinney Mountain Map
Semipalmated Plover (6) (Mlodinow) first 9/25
Common Tern (Mlodinow) first 9/25
Chestnut-collared Longspur (Mlodinow) first 9/25
++++Jefferson Map
Yellow-throated Warbler --see map (Mlodinow) reported 9/25

Routt County
++++King Mountain Trail
Sagebrush Sparrow (JoAnn Riggle) first 9/21

San Miguel County
++++Norwood Map
Nashville Warbler (Steele) (first 9/24) last 9/25

Good Birding!

Directions to birding spots and s on CoBus website:

Amy Davenport, Secretary, Colorado Birding Society Denver, CO
Contact CoBus/Report Interesting Birds: 303-324-7994
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