Date: 10/9/18 3:18 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for October 9, 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: 10/8/2018
Adams (Cassin's Kingbird, Gray-cheeked Thrush)
Arapahoe (Mew Gull, Bonaparte's Gull, Western Gull)
Bent (Winter Wren)
Boulder (Vermilion Flycatcher, Pectoral Sandpiper, Parasitic Jaeger, Lesser
Black-backed Gull, Northern Parula)
Clear Creek (Long-eared Owl, Black-throated Blue Warbler, Townsend's
Huerfano (Mexican Duck, Greater Roadrunner, Sage Thrasher)
Jefferson (Tropical Kingbird)
La Plata (Cassin's Vireo, Pectoral Sandpiper)
Larimer (Bonaparte's Gull, Cassin's Kingbird)
Mesa (Chestnut-sided Warbler)
Montrose (Townsend's Warbler)
Rio Grande (Sage Thrasher)


Adams County
++++Rocky Mountain Arsenal Map
Cassin's Kingbird --Lake Ladora (south) (Orien Richmond) last 10/8
++++Barr Lake Map
Gray-cheeked Thrush --see map (Bez Bezuidenhout) reported 10/8
Great Crested Flycatcher --banding station (McBurney/Ely:Mlodinow) (first
10/6) last 10/7
Swamp Sparrow (Ely:Mlodinow) first 10/7
Field Sparrow (McBurney) first 10/7
Plumbeous Vireo --banding station (McBurney) first 10/6

Arapahoe County
++++Aurora Reservoir & area Map
Mew Gull (Stevens) first 10/8
Bonaparte's Gull (Stevens) first 10/8
Western Gull (1st cycle) (Mlodinow:Ely/Cole Sage) (first 10/7) reported
Sprague's Pipit (heard only) (Mlodinow) reported 10/7
++++Cherry Creek Reservoir Map
Red-necked Phalarope (3) (Mlodinow) first 10/7
Common Tern (2) (David Ely:Steve Mlodinow) last 10/7
Sabine's Gull (Mlodinow) first 10/7
Sanderling (2) --pelican bay/dam trail (Bez Bezuidenhout) last 10/6

Boulder County
++++Walden Ponds Map
Vermilion Flycatcher (male) --east/ Cottonwood marsh parking lot (Peter
Burke/David Leatherman) (first 9/29) last 10/8
Pectoral Sandpiper (Pheneger:Zmolek/JV Rudd) (first 9/24) 1; last 10/8
Eastern Screech-Owl --western side (Bill Schretz) last 10/7
++++Lagerman Reservoir Map
Parasitic Jaeger (Peter Burke/Dave King) (first 10/6) last 10/8
Lesser Black-backed Gull (Peter Burke/King) (first 10/6) last 10/8
Red-necked Phalarope (4) (Steve Frye/Peter) (first 9/29) 11; last 10/6
++++Old St. Vrain Road & Area Map
Northern Parula (Mark Chavez) first 10/7
Magnolia Warbler (Dan Zmolek/Luke & Tracy Pheneger) (first 10/6) last 10/7
(0.2 miles west of bridge over creek)
Lewis's Woodpecker (Carl Bendorf) first 10/6
++++Twin Lakes Open Space Map
Townsend's Warbler (Dan Zmolek) first 10/7
++++Rabbit Mountain Open Space Map
Sage Thrasher (4) (Peter Burke) first 10/7
++++Boulder Reservoir area Map
Fox Sparrow (? species) (Ron Podjahski) first 10/7

Denver County
++++Westerly Creek Park
White-throated Sparrow (John Cobb) first 10/7

Douglas County
++++Walker Gravel Pit
Red-necked Phalarope (Riley Morris) first 10/6

El Paso County
++++Kettle Lakes
Broad-winged Hawk (Mel & Jeanne Goff) first 10/6

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Curve-billed Thrasher (Frank Farrell) 2; last 10/6
Sage Thrasher (Farrell) 7; last 10/6
Northern Mockingbird (Ginny Bergstrom) last 10/6
Chestnut-collared Longspur (2) (Frank Farrell) first 10/6
(above: banding station, El Paso Cty)

Huerfano County
++++County Road 230
Eastern Phoebe (David Tonnessen) first 10/8
Sage Thrasher (David Tonnessen) first 10/8
++++Lathrop State Park
Mexican Duck (Tonnessen) reported 10/8

Jefferson County
++++South Platte Park Reservoir & Area
Tropical Kingbird (Frank Farrell:Michael Lester/Washburn:Thompson)
(reported 10/5) last 10/8
(Seventh State Report, possible 2nd State Record)
++++Denver West Office Complex
White-throated Sparrow (Kevin DeBoer) first 10/6

Jefferson/Douglas County
++++Chatfield Reservoir
(NOTE: see directions on construction updates)
Sabine's Gull (Michael Lester/Dean Shoup) (first 10/5) 2; last 10/7
Common Loon (Dean Shoup) first 10/7
Eastern Phoebe --Deer Creek, north end of swim beach
(Farrell:Madsen/Stevens:Michaels) (first 9/19) last 10/6
(both in Jefferson Cty, construction restricts Douglas Cty birding maybe
until May, 2019)

Larimer County
++++Horseshoe Lake Map
Bonaparte's Gull (2) (Nick Komar) first 10/8
++++Cobb Lake Wildlife Area Map
(See Directions for Access)
Cassin's Kingbird (Nick Komar:Andy Bankert) first (first 10/7) last 10/8
Kingbirds (possible Cassin's & Couch's) (Andy Banert:Nick Komar) first
Drive 0.5 miles north on CR 3 from CR 56 to search for Kingbirds)
Sage Thrasher (Komar:Bankert) (first 10/4) 2; last 10/7
++++Strauss Cabin area/Rigden Reservoir
Common Loon (Nick Komar:David Wade) first 10/7
++++Greyrock Commons Trail
White-throated Sparrow (Doug Swartz) (first 9/26) last 10/7
++++Douglas Reservoir
Surf Scoter (2) (Tom Thomson:Nick Komar:David Wade) first 10/6
Red-necked Phalarope (5) (Thomson & all) first 10/6
Pectoral Sandpiper (John Shenot) first 10/6
Sage Thrasher (2) (Shenot) last 10/6

Pueblo County
++++Pueblo Reservoir
Townsend's Warbler --Rock Canyon (Darth Aves) first 10/7
Eastern Phoebe (Darth Aves) 2; last 10/6
(Rock Canyon, below dam, north of Arkansas River)

Weld County
++++Union Reservoir & area
Gray Flycatcher (Bill Prather) first 10/6


Baca County
++++Two Buttes Reservoir & area
Common Tern (probable first county record) (Mihm-Dunning:Leukering) first

Bent County
++++Tempel Grove Map
Winter Wren (Kathy Mihm-Dunning) first 10/7

Kiowa County
++++Neenoshe Reservoir
Black-bellied Plover (6) (Kathy Mihm-Dunning) first 10/7
Pacific Loon (Mihn-Dunning:Dowell) first 10/7
Chestnut-collared Longspur (3) (Mihn-Dunning:Dowell) first 10/7
++++Lower Queens Reservoir
Greater White-fronted Goose (7) (Kathy Mihm-Dunning:David Dowell) first

Otero County
++++Lake Holbrook
Black-bellied Plover (Kathy Mihm-Dunning) first 10/7
Marbled Godwit (3) (Kathy Mihm-Dunning) first 10/7
Pectoral Sandpiper (4) (Kathy Mihm-Dunning) first 10/7
Red-necked Phalarope (28) (Kathy Mihm-Dunning) first 10/7

Prowers County
++++North Gateway Park
Swamp Sparrow (Kathy Mihm-Dunning & all) first 10/6
Northern Mockingbird (Kathy Mihm-Dunning) first 10/5
++++County Road 21 at North Butte Creek
Nashville Warbler (Mihm-Dunning:Leukering) first 10/6
++++Ft. Bent Canal/west/14th street
Northern Mockingbird (2) (Dorothy Russell) first 10/6


Morgan County
++++Jackson Reservoir & area
Sabine's Gull --north side (Norm Lewis/Doug Faulkner) (first 10/5) last

Yuma County
++++Sandy Bluffs State Trust Lands
Short-eared Owl (Anna Troth:Gregg Goodrich) first 10/7
Burrowing Owl (Kaempfer) first 10/6
Eastern Bluebird (2) (Bill Kaempfer) first 10/6
Sprague's Pipit (4) (Bill Kaempfer) first 10/6
++++Bonny Reservoir Area
Red-headed Woodpecker (Troth:Goodrich) last 10/7


Archuleta County
++++Pagosa Springs & area
Lewis's Woodpecker (1) --San Juan Riverwalk (Jean Zimhelt:Charles
Martinez) last 10/6

Clear Creek County
++++Idaho Springs (2821 Riverside Drive)
Long-eared Owl (Matthew Wistrand) first 10/8
Black-throated Blue Warbler (Matthew Wistrand) reported 10/8
Townsend's Warbler (Wistrand) first 10/8

Delta County
++++Sweitzer Lake State Park
Sagebrush Sparrow (Betty Fenton/Carol Ortenzio) (first 9/30) 3; last 10/6
++++Confluence Park
Greater White-fronted Goose (Adam Cupito/Carol Ortenzio) (first 9/23)
last 10/6
++++Escalante Canyon
Chukar (6) (Gary Witt) first 10/6
Pinyon Jay (7) (Gary Witt) last 10/6
(above: Gunnison River to Cap Smith Cabin)

Fremont County
++++Valco Ponds, Canon City
Black Phoebe (Joel Adams) last 10/7

La Plata County
++++Pastorius Reservoir Map
Cassin's Vireo (James Beatty/Susan Allerton) (first 9/25) last 10/8
Pectoral Sandpiper (Allerton) last 10/8
++++Wildcat Canyon (Rafter J)
Acorn Woodpecker (2) (Steve Frohock) last 10/5

Mesa County
++++Connected Lakes State Park Area Map
Chestnut-sided Warbler (Carol Ortenzio) first 10/8
++++Whitewater Gravel Ponds
Common Loon (Betty Fenton) first 10/7

Montrose County
++++Nucla Sewer Ponds
Townsend's Warbler (Dexter:Wright) first 10/8
Cassin's Vireo (Coen Dexter:Brenda Wright) first 10/7
Sage Thrasher (2) --East 5th Avenue (Dexter:Wright) first 10/6

Park County
++++Spinney Mountain
Semipalmated Plover (4) (David Tonnessen:Jim Merritt) first 10/7
Lesser Black-backed Gull (Tonnessen:Merritt) first 10/7
Sage Thrasher (Stevens/Tonnesse:Merritt) first (first 10/2) last 10/7
Northern Mockingbird (Tonnessen:Merritt) first 10/7

Rio Grande County
++++Monte Vista National Wildlife Refuge
Sage Thrasher (Glenn Gade) first 10/8

Routt County
++++Steamboat Springs
Townsend's Warbler --Yampa River Core Trail (Daniel Patrick) first 10/5
++++Colorado Mountain College, Steamboat Springs
Townsend's Warbler --Yampa River Core Trail (Daniel Patrick) first 10/5

San Miguel County
++++Bear Creek Reserve
American Three-toed Woodpecker (Tom Prestby) first 10/6

Teller County
++++Manitou Lake
Lewis's Woodpecker (Scott Chalmers/Tonnessen:Merritt) (first 10/1) last

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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