Date: 9/30/18 3:46 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 30, 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: 9/29/2018
Adams/Denver (Chestnut-sided Warbler, Yellow-throated Warbler, Ash-throated
Arapahoe (Black-bellied Plover)
Boulder (Vermilion Flycatcher, Pectoral Sandpiper, Prothonotary Warbler,
Magnolia Warbler, Red-necked Phalarope, Sabine's Gull, Burrowing Owl, Sage
El Paso (Short-eared Owl, Curve-billed Thrasher, Northern Mockingbird, Sage
Thrasher, Burrowing Owl, Cassin's Vireo)
El Paso/Pueblo (Cassin's Kingbird, Cassin's Vireo, Curve-billed Thrasher,
Sage Thrasher, Northern Mockingbird, Chestnut-collared Longspur,
Black-and-white Warbler, Gray Flycatcher, Eastern Phoebe, Wood Thrush,
Broad-winged Hawk, Juniper Titmouse)
Garfield (Pinyon Jay)
Kit Carson (Cassin's Vireo, Palm Warbler, Magnolia Warbler, Swamp Sparrow)
Larimer (Pectoral Sandpiper, White-throated Sparrow, Townsend's Warbler)
Montezuma (Lewis's Woodpecker)
Ouray (Sagebrush Sparrow)
Pueblo (Green Heron)
Summit (Williamson's Sapsucker)
Weld (White-throated Sparrow)


Adams County
++++Barr Lake
Cassin's Vireo (Joe Chen) last 9/28
White-throated Sparrow (McBurney) first 9/27

Adams/Denver Counties
++++First Creek Trail
Chestnut-sided Warbler --370 meters/northwest of trailhead (Michael
Lester) (Adams Cty) first 9/29
Yellow-throated Warbler --last: willows southwest of trailhead
(Adams/Denver) (John Breitsch) first 9/29
(great sighting: would be third record for both Adams & Denver Counties)
Ash-throated Flycatcher (Denver Cty) (Dave King/Richard Stevens) (first
9/28) last 9/29
(photographed in cottonwoods just south of 56th avenue bridge)

Arapahoe County
++++Cherry Creek Reservoir Map
Black-bellied Plover (2) --last Prairie Loop (Ben Sampson) first 9/29
++++Centennial Park
Rusty Blackbird (5) (Edward Donnan) first 9/27

Boulder County
++++Walden Ponds Map
Vermilion Flycatcher (male) --back/cottonwood marsh (Peter Burke) first
9/29 NOT in late afternoon
Pectoral Sandpiper (Pheneger:Zmolek/Emil Yappert) (first 9/24) last 9/29
++++Pleasant View Marsh Map
Prothonotary Warbler (Ernest Crvich/Luke & Tracy Pheneger) (first 9/22)
last 9/29
Magnolia Warbler (Steve Mlodinow) first 9/29
Red-eyed Vireo (Bill Kaempfer/Christian Nunes:Peter Burke) (first 9/24)
last 9/27
Townsend's Warbler (Christian Nunes/Ernest Crvich) (first 9/23) last 9/27
++++Lagerman Reservoir Map
Red-necked Phalarope (4) (Steve Frye) first 9/29
Sabine's Gull (Frye) first 9/29
Burrowing Owl (Frye) last 9/29
++++Boulder Valley Ranch Open Space Map
Sage Thrasher --trailhead (Kent Forward) first 9/29

El Paso County
++++Hanover Road and area Map
Short-eared Owl (Alexander:Gilbert) first 9/29
Curve-billed Thrasher (2) --Fire Station (Kiki Widjaja) first 9/29
Northern Mockingbird --Fire Station (Widjaja) first 9/29
Sage Thrasher (Joe Chen) first 9/29
Burrowing Owl (4) (Debbie Segal/Diane Roberts) (first 7/23) 1; last 9/29
++++Red Rock Canyon Open Space Map
Cassin's Vireo (Gloria Nikolai) first 9/29
++++Garden of the Gods
Broad-winged Hawk (adult) (Mlodinow) first 9/29
Juniper Titmouse (Steve Mlodinow) first 9/29
++++Sinton Pond Open Space
Cassin's Vireo (Terence Berger) first 9/27
++++Paint Mines Interpretive Park
Northern Mockingbird (2) (John Bruder) first 9/27
Lark Bunting (5) (John Bruder) first 9/27

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Cassin's Kingbird (Joe Chen) last 9/29
Cassin's Vireo (Widjaja) last 9/29
Curve-billed Thrasher (Bez Bezuidenhout) last 9/29
Sage Thrasher (4) (Drummond) last 9/29
Northern Mockingbird (Robb Hinds) last 9/29
Chestnut-collared Longspur (Drummond/Widjaja) (first 9/26) 12; last 9/29
(above: banding station unless stated elsewhere, El Paso County)
Black-and-white Warbler (Kevin Ash:Christine Alexander) first 9/29
Gray Flycatcher --Rose Pond (Kiki Widjaja) first 9/29
Eastern Phoebe (John Drummond/Widjaja) (first 9/26) last 9/29
Cassin's Kingbird (Widjaja) last 9/29
Wood Thrush (Christine Alexander) first 9/29
(above: Rose Pond, Pueblo County)

Jefferson County
++++Lee Gulch Trail
Broad-winged Hawk --Eltai Street to Horseshoe Park (David Suddjian) first
++++Standley Lake
Semipalmated Plover (David Chernack) first 9/27
Common Tern (David Chenack) (first 9/20) 2; last 9/27
++++Wheat Ridge Greenbelt (Prospect Park)
Blackpoll Warbler (Kevin DeBoer) first 9/27

Jefferson/Douglas County
++++Chatfield Reservoir
(NOTE: see directions on construction updates)
Nashville Warbler --north/Audubon Center Trails (Terry Michaels) first
Townsend's Warbler --north/Audubon Center trails (Terry Michaels) first

Larimer County
++++Timnath Reservoir Map
Pectoral Sandpiper (Nick Komar) 7; last 9/29
++++Grandview Cemetery Map
White-throated Sparrow (1st winter) (Leatherman/David Wade) (first 9/25)
last 9/29
Townsend's Warbler (David Wade) (first 9/16) last 9/29
++++Wellington Wildlife Area, Cobb Lake
Black-bellied Plover (3) (Andy Bankert) first 9/28
Long-eared Owl (Bankert) last 9/28
++++Fort Collins
Broad-winged Hawk (Nick Komar) first 9/28
(Pleasant Valley & Lake Canal greenbelt at W Lake Street)

Las Animas County
++++Trinidad State Park
Williamson's Sapsucker --Campgrounds (Thomas Brown) (first 9/26) last 9/27
Sage Thrasher --Watchable Wildlife Trail (Walker/Thomas Brown) (first
9/26) last 9/27
Chestnut-collared Longspur (2) --Wildlife trail (Thomas Brown) first 9/27

Pueblo County
++++Valco Ponds Wildlife Area Map
Green Heron (Tim Leppek) last 9/29

Weld County
++++Crow Valley Map
White-throated Sparrow (Audrey Etienne) first 9/29
++++Norma's Grove (CR 100/east/CR 57)
Broad-winged Hawk (Dean Shoup) first 9/28


Prowers County
++++North Gateway Park
Tundra Swan --Arkansas River/Hwy 50 (Jane Stulp) last 9/27


Kit Carson County
++++Flagler Reservoir Map
Cassin's Vireo (Stevens) first 9/29
Palm Warbler (Stevens) first 9/29
Magnolia Warbler (Stevens) first 9/29
Swamp Sparrow (Stevens) first 9/29

Logan County
++++Duck Creek Wildlife Area
Red-bellied Woodpecker (Stevens) last 9/27
Blue-headed Vireo (Stevens) first 9/27
++++Tamarack Ranch Wildlife Area
Eastern Screech-Owl (2 locations, east & west) (Stevens) last 9/26
Red-bellied Woodpecker (5) (Stevens) last 9/26
Red-headed Woodpecker (2) (Stevens) last 9/26
Yellow-billed Cuckoo (Stevens) last 9/26
(ties for fifth latest date, three October sightings)
Field Sparrow (Stevens) last 9/26
Blue-headed Vireo (Stevens) last 9/26
Nashville Warbler (Stevens) last 9/26

Logan/Washington Counties
++++Prewitt Reservoir area
Lesser Black-backed Gull Joey Kellner:Dean Shoup) first 9/28
White-throated Sparrow (Shoup) first 9/28

Sedgwick County
++++Sedgwick Draw
Short-eared Owl (Richard Stevens) first 9/27
Eastern Screech-Owl (Stevens) first 9/27
Tennessee Warbler (Stevens) first 9/27
++++Sedgwick Cemetery
Red-bellied Woodpecker (Stevens) first 9/27
++++Sedgwick Bar Wildlife Area
Red-bellied Woodpecker (Stevens:Michaels/Stevens) (first 9/20) last 9/27
Eastern Bluebird (2) (Stevens) last 9/27

Yuma County
++++Bonny Reservoir Area
Sprague's Pipit --Pipit Hill (Richard Stevens) first 9/28
Nashville Warbler (Stevens:Michaels/Stevens) (first 9/22) last 9/28
Broad-winged Hawk --wagon wheel (Suddjian & all) first 9/26
Burrowing Owl (2) --Pipit Hill (David Dowell/Suddjian) (first 9/23) last
(Bonny Reservoir Wildlife Area)
Red-bellied Woodpecker (2) (Stevens) last 9/28
Red-headed Woodpecker (2) (Stevens) last 9/28
Eastern Bluebird (12+) (Stevens) last 9/28
Blue-headed Vireo (Stevens) first 9/28
Red-headed Woodpecker (Stevens) last 9/28
Red-bellied Woodpecker (2) (Stevens) last 9/28
(Hale Ponds)


Alamosa County
++++San Luis Lakes State Park
Black-bellied Plover (5) (Stump:Rawinski) first 9/27
Semipalmated Plover (Stump:Rawinski) first 9/27

Archuleta County
++++Navajo Reservoir
Sage Thrasher (3) (James Beatty) first 9/27
Sagebrush Sparrow (James Beatty) first 9/27

Clear Creek County
++++Mt. Evans Road
Barrow's Goldeneye (up to 11) --Echo Lake (Nathan Senner/Alec McDonell)
(first 5/2) 5; last 9/26
++++Guanella Pass
White-tailed Ptarmigan --Bierstadt trail (Frank Farrell) 6; last 9/23

Costilla County
++++Smith Reservoir
Sabine's Gull (juv) (Rawinski/John Stump:John Stump) (first 9/26) last

Custer County
++++DeWeese Reservoir
Magnolia Warbler (Rich Miller) reported 9/28

Fremont County
++++Arkansas Riverwalk
Eastern Phoebe --Sells Pond to Raynolds Avenue (Catherine Olin) last 9/28
Black Phoebe --Sells Pond to Raynolds Avenue (Jerry DeBoer) last 9/25
++++Brush Hollow Wildlife Area
Sage Thrasher (Cathy Sheeter) last 9/28

Garfield County
++++Rifle Arch Trail
Pinyon Jay (3) (Coen Dexter:Brenda Wright) first 9/29

Hinsdale County
++++Lake San Cristobal
Sage Thrasher (Gary Koehn) first 9/27

Jackson County
++++Arapaho National Wildlife Refuge & Area
Burrowing Owl (2) (Nick Komar) first 9/27

La Plata County
++++Pastorius Reservoir
Pectoral Sandpiper (Susan Allerton/David Dunford) (first 9/27) last 9/28

++++Huck Finn Pond area & Animas River Trail
Black Phoebe --Pond & Hatchery (Kristi Dranginis) last 9/26

Mesa County
++++16.5 Road on Pinyon Mesa
Williamson's Sapsucker (David Price) first 9/28
Pinyon Jay (20) (David Price) first 9/28
++++Horsethief Canyon Wildlife Area
Black Phoebe (Mike Henwood) last 9/27

Moffat County
++++Loudy Simpson Nature Trail
Nashville Warbler (Jan Leonard) last 9/28

Montezuma County
++++County Road 38
Lewis's Woodpecker (James Beatty) first 9/29
++++Denny Lake
Sage Thrasher (Erik Hendrickson) first 9/27

Montrose County
++++Baldridge & Ute Parks
Black Phoebe (Janet Haw) first 9/26
++++Airport Lake Area
Black Phoebe --Rose Garden (Horn:Harris/Dexter:Wright) (first 7/13) last
Sage Thrasher (Dexter:Wright) last 9/26
Sagebrush Sparrow (6) --Rose Garden (Dexter:Wright) (first 9/25) last 9/26
++++Bostwick Park Road
Pinyon Jay (21) (Betty Fenton) first 9/26

Ouray County
++++Owl Creek Pass Road Map
Sagebrush Sparrow (Betty Fenton) first 9/29

Pitkin County
++++Woody Creek Trail at Lenado
Townsend's Warbler (Catherine Hagen) first 9/28
++++County Road 111
Pinyon Jay (11) (Donald Pendleton) first 9/26

San Miguel County
Nashville Warbler (Steele) (first 9/24) last 9/28

Summit County
++++Dillon Reservoir Map
Williamson's Sapsucker --Sapphire Point Trail (Lyle Hamilton) first 9/29

Teller County
++++Manitou Lake
Townsend's Warbler (Richard Bunn) first 9/28

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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