Date: 9/10/17 3:49 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 10, 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: 9/9/2017
Adams (Townsend's Warbler, Cassin's Vireo, Mississippi Kite, Sage Thrasher)
El Paso/Pueblo (Red-eyed Vireo, Curve-billed Thrasher, Northern
Mockingbird, Cassin's Sparrow, Dickcissel)
Jefferson/Douglas (Sabine's Gull)
Larimer (Caspian Tern, Lewis's Woodpecker, Brown-capped Rosy Finch)
Pueblo (Black-throated Green Warbler, Black Phoebe, Eastern Phoebe)
Weld (Blue-headed Vireo, Olive-sided Flycatcher, Black-and-white Warbler,
Nashville Warbler, Blackpoll Warbler, Red-headed Woodpecker, Least
Flycatcher, Cassin's Kingbird, Tennessee Warbler)
Logan/Washington (Mississippi Kite, Semipalmated Plover, Marbled Godwit,
Buff-breasted Sandpiper, Pectoral Sandpiper, Red-necked Phalarope, Lesser
Black-backed Gull, Common Tern, Black-and-white Warbler, Northern Parula,
Bay-breasted Warbler, Chestnut-sided Warbler, Cassin's Vireo, American
Clear Creek (Brown-capped Rosy Finch)
Gunnison (American Three-toed Woodpecker)
Montrose (Pinyon Jay)
Ouray (Black Swift, Black Phoebe, Lewis's Woodpecker)
Summit (Williamson's Sapsucker)


Adams County
++++Barr Lake
Townsend's Warbler (McBurney) last 9/9
Cassin's Vireo (McBurney) last 9/9
Nashville Warbler (Tracy Rackauskas) first 9/9
++++Rocky Mountain Arsenal
Mississippi Kite --flyover Ladora to Havana Ponds (Jacob Washburn) first
Sage Thrasher (4+) --Rattlesnake Hill parking area (Stevens/Washburn)
(first 9/4) 1; last 9/9
Nashville Warbler (2) --Adams cty section (John Breitsch) first 9/8

Adams/Denver Counties
++++First Creek Trail
Nashville Warbler (2) --Adams cty section (John Breitsch) first 9/8
++++DIA Owl Loop
Burrowing Owl (1) --W. Cargo Road & Third Creek (Stevens:Kosten) last 9/4

Boulder County
++++Walden Ponds
Chestnut-sided Warbler (Mark Holmgren) first 9/8
Williamson's Sapsucker (imm) (Ted Floyd) first 9/8
++++Lagerman Reservoir
Semipalmated Plover (2) (Luke Pheneger) first 9/8
Common Tern (Pheneger) first 9/8
++++Wild Basin Section of Rocky Mountain National Park
Black Swift (4) --Ouzel Falls (Myron Gerhard) last 9/6

Denver County
++++Bluff Lake Nature Area
Wild Turkey --east of Lake (Washburn/Andrew Fontenot) (first 8/16) last
Least Flycatcher (Jacob Washburn/Loch Kilpatrick) (first 9/6) last 9/8

El Paso County
++++Clear Spring Ranch
Tennessee Warbler (Steve Brown) first 9/8
Northern Waterthrush (Steve Brown) last 9/8
++++Blodget Peak Open Space
Williamson's Sapsucker (Bruce Nygaard) last 9/8
++++Hanover Road
Greater Roadrunner (1) (Diane Roberts/Norm Lewis) (first 7/28) last 9/8
++++Pupit Rock Park
Tennessee Warbler (Del Nelson) first 9/7
Olive-sided Flycatcher (Del Nelson) first 9/7
Blue-headed Vireo (Alan Versaw) first 9/6
Cassin's Vireo (Versaw) first 9/6

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Red-eyed Vireo (Aaron Yappert/Driscoll) (first 9/5) last 9/9
Curve-billed Thrasher (1) (Aaron & Pata Driscoll) last 9/9
Northern Mockingbird --banding station (Aaron Yappert/Driscoll) 7; last
Cassin's Sparrow (Driscoll) last 9/9
Dickcissel (2) (Robb Hinds) first 9/9
Ladder-backed Woodpecker (Aaron Yappert) 2; last 9/8
(all above: banding station area, unless otherwise stated)
(All above: El Paso County)
Cassin's Kingbird --HQ (Aaron Yappert) last 9/8
Cassin's Sparrow (Lewis) last 9/8
Cassin's Vireo --headquarters (Norm Lewis) last 9/8
(All above: Pueblo County)

Huerfano County
++++Lathrop State Park
Pinyon Jay (5) (JoAnn Riggle) first 9/7

Jefferson/Douglas County
++++Chatfield Reservoir area
Sabine's Gull (5) --east of marina sandspit (Joey Kellner/Marion & John
Warren) (first 9/3) last 9/9
Lesser Black-backed Gull --marina sandspit (Holden:Glass/Stevens) (first
8/26) last 9/8
Black Phoebe --swim beach (Holub/Betty Glass) first (first 9/2) last 9/7
Eastern Phoebe --swim beach (Brian Johnson) (first 9/3) last 9/7
American Redstart --swim beach (Lorraine Lanning) first 9/7
++++Hildebrand Ranch Park
Eastern Phoebe (Stevens) first 9/8
Indigo Bunting (Stevens) first 9/8

Larimer County
++++Timnath Reservoir
Caspian Tern (4) (Joe Mammoser/Candice Johnson) (first 8/16) 1; last 9/9
++++Hewlett Gulch
Lewis's Woodpecker (5) (Lori Zabel/John Shenot) (first 9/3) last 9/9
++++Rocky Mountain National Park
Brown-capped Rosy Finch(30) --Medicine Bow Curve (Hans Bucht) last 9/9
++++South Bartels Reservoir
Black-bellied Plover (Lori Pivonka/David Wade) (first 9/6) last 9/7

Pueblo County
++++Pueblo Reservoir
Black-throated Green Warbler --Cottonwood picnic area parking lot
(Percival/Kathy Miller) (first 9/7) last 9/9
Eastern Phoebe Cottonwood/Snakeskin picnic areas (Percival) last 9/9
Townsend's Warbler (2) --Osprey picnic area (Brandon Percival) first 9/7
Townsend's Warbler (2) --Cottonwood picnic area (Percival) first 9/7
Black-and-white Warbler --Cottonwood picnic area (Percival) first 9/7
++++Valco Ponds
Black Phoebe (1) (Mark Yaeger) last 9/9
Eastern Phoebe (4) (Mark Yaeger) last 9/9
++++Cattail Crossing
Blackpoll Warbler (Pecival) first 9/7

Weld County
++++Crow Valley Campground
Blue-headed Vireo (Ryan Graves) reported 9/9
Olive-sided Flycatcher (Ryan Graves) first 9/9
Black-and-white Warbler (Ryan Graves) first 9/9
Nashville Warbler (Kellner/Graves) (first 9/8) last 9/9
Blackpoll Warbler (Graves) first 9/9
Tennessee Warbler (Norm Erthal) reported 9/8
Ovenbird (Cynthia Kristensen) first 9/7
Least Flycatcher (Gene Rutherford) last 9/6
American Redstart (2) (Steve Mlodinow/Loch Kilpatrick) (first 8/22) last
++++Norma's Grove
Red-headed Woodpecker (Ryan Graves) last 9/9
Least Flycatcher (Jean Olson/Graves) (first 9/3) last 9/9
Cassin's Kingbird (Rutherford/Graves) (first 9/8) last 9/9
Tennessee Warbler (Graves) first 9/9
++++Behrens Reservoir
Dickcissel (1) (Gene Rutherford) (first 7/16) reported 9/8
++++Beebe Draw Ponds area
Burrowing Owl (2) --CR 42 (Rutherford) last 9/8
Red-necked Phalarope --CR 42 (Gary Lefko) first 9/7


Bent County
++++Tempel Grove
Blue-headed Vireo (Percival/Drummond) (first 9/5) last 9/8
Possible Black-billed Cuckoo (John Drummond) reported 9/8
Yellow-bellied Flycatcher --north side of Canal, east of CR 35 (Duane
Nelson) first 9/7
Magnolia Warbler (1st year female) (Duane Nelson) first 9/7
Yellow-billed Cuckoo (Leatherman/Jane Stulp) (first 9/4) 2; last 9/7
Red-headed Woodpecker (Jane Stulp) 3; last 9/7
Olive-sided Flycatcher (Stulp) first 9/7

Otero County
++++La Junta (4th Street/west of Colorado Ave)
Greater Roadrunner (Susan Dietrich-Schneider) first 9/7
Scissor-tailed Flycatcher (Dietrich-Schneiger) first 9/7
Mississippi Kite (Dietrich-Schneiger) last 9/7


Kit Carson County
++++Flagler Reservoir
Blue-headed Vireo (Stevens:Michaels) first 9/5
Red-eyed Vireo (Stevens:Michaels) first 9/5
Great Crested Flycatcher (Stevens:Michaels) first 9/5
Ovenbird (Stevens:Michaels) first 9/5
Red-headed Woodpecker (Stevens:Michaels) last 9/5
American Redstart (Dowell/Stevens:Michaels) (first 9/1) last 9/5

Logan/Washington Counties
++++Prewitt Reservoir area
Mississippi Kite (Kaempfer:Vanderpoel) first 9/9
Semipalmated Plover (Mlodinow/Kaempfer & all) (first 8/29) 6; last 9/9
Marbled Godwit (Blue/Kaempfer & all) first (first 8/24) 1; last 9/9
American Golden-Plover (Kathy Mihm-Dunning) first 9/8
Buff-breasted Sandpiper (Mihm-Dunning/Kaempfer & all) (first 9/8) last 9/9
Pectoral Sandpiper (Mihm-Dunning/Kaempfer & all) (first 9/8) 12; last 9/9
Red-necked Phalarope (8) (Mihm-Dunning/Kaempfer & all) (first 9/8) 5;
last 9/9
Lesser Black-backed Gull (Bill Kaempfer & all) first 9/9
Common Tern (Walbek/Kaempfer & all) (first 9/8) last 9/9
Black-and-white Warbler (Walbek/Kaempfer & all) (first 9/8) last 9/9
Northern Parula (Mihm-Dunning/Mark Chavez:Art Hudak) (first 9/8) last 9/9
Bay-breasted Warbler (Mihm-Dunning/Loch Kilpatrick) (first 9/8) last 9/9
Chestnut-sided Warbler (Chavez:Hudak) first 9/9
Short-billed Dowitcher (Glenn Walbek) reported 9/8
Cassin's Vireo (Kilpatrick/Mihm-Dunning) (first 8/31) last 9/8
Red-eyed Vireo (Walbek) first 9/8
American Redstart (1) (Mihm-Dunning) first 9/8
(best shorebird location: southwest corner/access from inlet canal)
(best passerine location: inlet canal grove)

Washington County
++++Last Chance Rest Stop
Cassin's Vireo (David Dowell/Chavez:Hudak) (first 9/1) last 9/9
American Redstart (Mark Miller/Chavez:Hudak) (first 8/27) last 9/9
++++Washington Country Club Golf Course Park
Chestnut-sided Warbler (Glenn Walbek) first 9/8

Yuma County
++++Yuma County Road 45
Greater Prairie-Chicken (7) (Stevens:Kosten/Stevens:Michaels) (first
2/18) 2; last 9/7
--Between Hwy 385 and Lek, 1.7 miles/east/hwy 385
++++Sandhiller Motel, Wray
Blue-headed Vireo --cottonwood, east end of parking lot
(Stevens:Michaels) first 9/7
++++Stalker Pond
Northern Cardinal (2) (Stevens:Michaels) last 9/7
Northern Waterthrush (Stevens:Michaels) first 9/7
++++Wray Fishing Unit
Olive-sided Flycatcher (Stevens:Michaels) first 9/7
Northern Cardinal (Stevens:Michaels) last 9/7
++++Sandsage Wildlife Area
Red-headed Woodpecker (Stevens:Michaels) last 9/7
Bell's Vireo (Stevens:Michaels) first 9/7
++++Wray City Park
Red-headed Woodpecker (Stevens:Michaels) first 9/7
++++Bonny Reservoir Area
Blue-headed Vireo (Stevens:Michaels) first 9/6
Cassin's Vireo (2) (Stevens:Michaels) first 9/6
American Redstart --wagon wheel (Linda Lee/Stevens:Michaels) (first 9/4)
last 9/6
Magnolia Warbler --Hale Ponds (Stevens:Michaels) first 9/6
Nashville Warbler --Hale Ponds (Stevens:Michaels) first 9/6
Townsend's Warbler --Hale Ponds (Mlodinow/Stevens:Michaels) (first 9/1)
last 9/6
Great Crested Flycatcher --Hale (Stevens:Michaels) last 9/6
Red-bellied Woodpecker --Hale (Stevens:Michaels) last 9/6
Red-bellied Woodpecker (3) --Hale Ponds (Stevens:Michaels) last 9/6
Red-headed Woodpecker (5) --wagon wheel (Stevens:Michaels) last 9/6
Red-headed Woodpecker (6) --Hale Ponds (Stevens:Michaels) last 9/6
Baltimore Oriole (5) --Hale Ponds (Mlodinow/Stevens:Michaels) (first 9/1)
last 9/6
Northern Cardinal --Foster's Grove (Stevens:Michaels) last 9/6
Eastern Screech-Owl (2) --Hale Ponds (Stevens:Michaels) last 9/6
Eastern Screech-Owl (1) --Hale (Stevens:Michaels) last 9/5
Eastern Screech-Owl (3) --Republican River (Stevens:Michaels) last 9/5
Short-eared Owl (Stevens:Michaels) last 9/5
Long-eared Owl (1) (Stevens:Michaels) last 9/5
Common Poorwill (Stevens:Michaels) last 9/5


Alamosa County
++++Cattails Golf Course
American Redstart --black tee/ Cougar Woods (John Rawinski) first 9/8
++++Blanca Wetlands
Snowy Plover --Pond 46 (Daniel Toronto:Leah Dodd/John Rawinski) (first
7/16) last 9/8

Chaffee County
++++Chaffee County
Lewis's Woodpecker (1) --Buena Vista Nature trail (David Webb) last 9/7

Clear Creek County
++++Mt. Evans Road
Brown-capped Rosy Finch (12) --summit (Will McPhail) last 9/9
Barrow's Goldeneye (2+) --Echo Lake (Dave King/Lorraine Lanning) (first
5/11) 5; last 9/5
American Three-toed Woodpecker (1)--Echo Lake
(Fontenot:Bezuidenhout/Lorraine Lanning) (first 7/16) last 9/5

Custer County
++++DeWeese Reservoir
Sabine's Gull (juvenile) (Cheryl Teuton/Rich Miller) (first 9/3) last 9/6
Chestnut-sided Warbler (juv) --below dam (Rich Miller) first 9/6

Fremont County
++++County Road 19, south of CR 106
Lewis's Woodpecker (2) (Sandra Ewald) first 9/7

Gunnison County
++++Mt. Crested Butte
American Three-toed Woodpecker (2) (Marcel Such) first 9/9

Mesa County
++++Horsethief Canyon Wildlife Area
Northern Waterthrush (Mike Henwood) first 9/8
(small pond along River Trail)

Montrose County
++++Nucla Town Reservoir
Pinyon Jay (9) (Dexter:Wright) (first 8/6) 2; last 9/9
++++Black Canyon of Gunnison National Park
Dusky Grouse (1) --Campgrounds (John Coons) last 9/7
++++Airport Lake Area
Black Phoebe --Cooper's Ditch, see map (Dexter:Wright) first 9/5
Lewis's Woodpecker --Cooper's Ditch, see map (Dexter:Wright) first 9/5

Ouray County
++++Ouray and Box Canyon Falls
Black Swift (2) (Glenn Walbek/Jon Horn) (first 6/11) 2; last 9/9
++++Billy Creek Wildlife Area
Black Phoebe (Kent Nelson/Jon Horn) (first 5/6) last 9/9
++++Ridgway (Moffat Street)
Lewis's Woodpecker (Jon Horn) first 9/9
++++Ridgway State Park
Golden-winged Warbler (imm female) --banding station (Mary Menz) first

Park County
++++Antero Reservoir
Long-tailed Jaeger (Steve Mlodinow/Joel Adams) (first 8/26) last 9/4

Saguache County
++++Russell Lakes Wildlife Area
American Bittern (2) (John & Kathy Keagle/JoAnn Riggle) (first 5/26) last

Summit County
++++North Tenmile Trailhead
Williamson's Sapsucker (male) (Jack & Ryan Bushong) first 9/9

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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