Date: 9/6/17 6:40 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 6, 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: 9/5/2017
Adams (Cassin's Vireo, Red-headed Woodpecker, Sage Thrasher, Townsend's
Warbler, Tennessee Warbler)
Arapahoe (American Redstart, Northern Mockingbird)
Boulder (American Redstart, Brown-capped Rosy Finch)
El Paso (Tennessee Warbler, Nashville Warbler, Blackpoll Warbler, Cassin's
Kingbird, Indigo Bunting, Ladder-backed Woodpecker)
El Paso/Pueblo (Williamson's Sapsucker, Northern Mockingbird, Red-eyed
Vireo, American Redstart, Dickcissel)
Jefferson/Douglas (Long-billed Curlew, Marbled Godwit, Lesser Black-backed
Gull, Sabine's Gull, Black Phoebe, Eastern Phoebe, Cassin's Vireo, Northern
Waterthrush, Nashville Warbler)
Larimer (Caspian Tern, Cassin's Vireo, Blackpoll Warbler, Brown-capped Rosy
Weld (American Redstart, Baltimore Oriole)
Baca (Prothonotary Warbler, Great Crested Flycatcher, Blue-headed Vireo,
Cassin's Vireo, Red-eyed Vireo, Tennessee Warbler, Black-and-white Warbler,
American Redstart, Ovenbird, Least Flycatcher, Green Heron)
Bent (Barn Owl, Great Crested Flycatcher, Least Flycatcher, Cassin's Vireo,
Blue-headed Vireo, Red-eyed Vireo, American Redstart, Ovenbird, Townsend's
Warbler, American Redstart)
Prowers (Northern Cardinal, American Redstart, Great Crested Flycatcher,
Red-eyed Vireo, Baltimore Oriole)
Kit Carson (Blue-headed Vireo, Red-eyed Vireo, Great Crested Flycatcher,
Ovenbird, Red-headed Woodpecker, American Redstart)
Washington (Northern Waterthrush, Least Flycatcher)
Alamosa (Pinyon Jay)
Clear Creek (Barrow's Goldeneye, American Three-toed Woodpecker)
Montrose (Black Phoebe, Lewis's Woodpecker)


Adams County
++++Rocky Mountain Arsenal
Cassin's Vireo (Jacob Washburn) first 9/5
(along First Creek trail, accessed from Buckley Road)
Red-headed Woodpecker (Stevens/Washburn) (first 9/4) last 9/5
Sage Thrasher
(4+) --Rattlesnake Hill parking area (Stevens/Washburn) (first 9/4) 2;
last 9/5
Upland Sandpiper (Richard Stevens) first 9/4
(southern end of Bluestem Southwest Loop)
Cassin's Vireo (Stevens) first 9/4
(twelve foot cottonwoods along raised platform trail, Bluestem Southwest
++++Eastlawn Memorial Cemetery
Townsend's Warbler (Dave King) first 9/5
++++Barr Lake
Cassin's Vireo (2) (Stevens/McBurney) (first 8/14) last 9/5
Tennessee Warbler (McBurney) first 9/5

Adams/Denver Counties
++++First Creek Trail
Barn Owl --Denver Cty (Pablo Queszada) 2; last 9/4
++++DIA Owl Loop
Burrowing Owl (1) --W. Cargo Road & Third Creek (Stevens:Kosten) last 9/4

Arapahoe County
++++Aurora Sports Park
American Redstart (Dave King) first 9/5
(Along Sand Creek, 100 yards south of east-west to north-south bend)
++++Picadilly Road & 6th Avenue Map
Northern Mockingbird (Dave King) first 9/5
++++St. Mary Church
American Redstart (David Suddjian) first 9/3

Boulder County
++++Golden Ponds
American Redstart (Luke Pheneger/David Dowell) (first 8/26) 2; last 9/5
++++Fourth of July Campground
Brown-capped Rosy Finch (4) (Luke Pheneger/Stephen Chang) (first 7/30) 2;
last 9/5
++++Walden Ponds
American Bittern (Benforf:Deferme/Gabriel Peterson) (first 8/29) 9/4
Caspian Tern (Pat Heller) first 9/3
++++Wild Basin Section of Rocky Mountain National Park
Black Swift (4) --Ouzel Falls (Yappert) last 9/3

Denver County
++++Bluff Lake Nature Area
Wild Turkey --east of Lake (Washburn/Pablo Queszada) (first 8/16) last

El Paso County
++++Fountain Creek Regional Park
Tennessee Warbler (David Tonnessen) first 9/5
Nashville Warbler (Tonnessen) first 9/5
Blackpoll Warbler (Tonnessen) first 9/5
Cassin's Kingbird (Tonnessen) first 9/5
Indigo Bunting (Tonnessen) first 9/5
Mississippi Kite (2) (David & Cheryl Hubbard) last 9/1
++++Hanover Road and area
Ladder-backed Woodpecker --at Old Pueblo Road (Diane Roberts) first 9/5
Northern Mockingbird --at Old Pueblo Road (Diane Roberts) first 9/5
++++Ramah Wildlife Area
Pectoral Sandpiper (3) (John Drummond/Robb Hinds) (first 8/26) 2; last
++++Clear Spring Ranch
Least Flycatcher --banding station (Steve Brown) first 9/4
++++Rampart Park
Least Flycatcher (John Drummond) first 9/3

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Williamson's Sapsucker --Bell Grove (Mel Goff/Diane Roberts) (first 9/4)
last 9/5
Northern Mockingbird --Bell Grove (Diane Roberts) 9; last 9/5
Red-eyed Vireo (Aaron Yappert) first 9/5
Upland Sandpiper (Mel Goff & all) first 9/4
Ladder-backed Woodpecker (Aaron Yappert) last 9/4
Olive-sided Flycatcher --wooded areas (Kurt Mize/Mel Goff) (first 8/19)
last 9/4
Cassin's Vireo (Tonnessen/Aaron Yappert) (first 8/24) last 9/4
Curve-billed Thrasher (2) (Yappert) last 9/4
Black-and-white Warbler (Yappert) first 9/4
Dickcissel (3) (Mel Goff & all) first 9/4
(all above: banding station area:wooded areas)
(All above: El Paso County)
American Redstart --headquarters (Gary Koehn) first 9/5
Dickcissel --headquarters (Kevin Ash) first 9/5
Ladder-backed Woodpecker --Rose Pond (John Drummond) last 9/4

Jefferson/Douglas County
++++Chatfield Reservoir area
Long-billed Curlew (Phil Lyon) first 9/5
Marbled Godwit (Phil Lyon) first 9/5
Lesser Black-backed Gull --marina sandspit (Holden:Glass/Lyon) (first
8/26) last 9/5
Sabine's Gull (juv) --marina sandspit (Joey Kellner/Loch Kilpatrick)
(first 9/3) 5; last 9/5
Black Phoebe --north of swim beach (Holub/Kilpatrick) first (first 9/2)
last 9/5
Eastern Phoebe --swim beach (Brian Johnson/Kilpatrick) (first 9/3) last
Cassin's Vireo --swim beach (Kilpatrick) first 9/5
Northern Waterthrush --swim beach (Kilpatrick) first 9/5
Nashville Warbler --swim beach (Kilpatrick) first 9/5

Larimer County
++++Timnath Reservoir
Caspian Tern (2) (Joe Mammoser) (first 8/16) 3; last 9/5
++++Riverbend Ponds Natural Area
Cassin's Vireo (David Wade) first 9/5
Blackpoll Warbler (Wade) first 9/5
++++Rocky Mountain National Park
Brown-capped Rosy Finch
(100) --Mount Chapin Trail (Thomas Archdeacon) last 9/5
American Three-toed Woodpecker
(1) --Bear Lake (Leah Trutschel) last 9/4
(1) --Hollowell Park (Matt Cohen) last 9/4
(1) --Ouzel Falls (Emil Yappert) last 9/3
(1) --Endovalley (Luke Pheneger) last 9/3
++++Duck Lake
Red-necked Phalarope (Gwen Moore/Nick Komar) (first 8/14) 2; last 9/4

Pueblo County
++++Valco Ponds
Black Phoebe (1) (Mark Yaeger) last 9/4
Eastern Phoebe (4) (Mark Yaeger) last 9/4

Weld County
++++Crow Valley Campground
American Redstart (2) (Steve Mlodinow/Gene Rutherford) (first 8/22) last
Baltimore Oriole (Rutherford) reported 9/5
++++Norma's Grove
Ovenbird (Gene Rutherford) first 9/4
Blue-winged Warbler (Rutherford) reported 9/4
Black-and-white Warbler (Rutherford) first 9/4
American Redstart (Rutherford) first 9/4
Least Flycatcher (Jean Olson) first 9/3
++++Eaton Cemetery
Red-eyed Vireo (Gene Rutherford) first 9/3


Baca County
++++Two Buttes Reservoir & area
Prothonotary Warbler (Percival) first 9/5
Great Crested Flycatcher (2) (Mlodinow/Percival) (first 9/3) last 9/5
Blue-headed Vireo (2) (Mlodinow/Percival) (first 9/3) last 9/5
Cassin's Vireo (Percival) first 9/5
Red-eyed Vireo (Percival) first 9/5
Tennessee Warbler (Mlodinow/Percival) (first 9/3) last 9/5
Black-and-white Warbler (Percival) first 9/5
American Redstart (3) (Percival) first 9/5
Ovenbird (Percival) first 9/5
Least Flycatcher (Percival) first 9/5
Green Heron (Percival) first 9/5
++++Turk's Pond
Broad-winged Hawk (Steve Mlodinow) first 9/3
American Redstart (Mlodinow) first 9/3

Bent County
++++Tempel Grove
Barn Owl (2) (Percival) last 9/5
Great Crested Flycatcher (2) (Leatherman/Percival) (first 9/4) last 9/5
Least Flycatcher (Percival) first 9/5
Cassin's Vireo (2) (Percival) first 9/5
Blue-headed Vireo (Percival) first 9/5
Red-eyed Vireo (Percival) first 9/5
American Redstart (Leatherman/Percival) (first 9/4) last 9/5
Ovenbird (2) (Percival) first 9/5
Townsend's Warbler (Percival) first 9/5
Yellow-billed Cuckoo (Leatherman) first 9/4
John Martin Reservoir area
American Redstart (Holmgren/Percival) (first 8/28) 2; last 9/5
Red-eyed Vireo (Percival) first 9/5
(all above: Lake Hasty Campgrounds)

Kiowa/Bent Counties
++++Blue Lake
Long-billed Curlew (Komar/Mlodinow) (first 8/17) 1; last 9/3
Greater Roadrunner (Mlodinow) first 9/3
Barn Owl (Mlodinow) first 9/3

Lincoln County
++++County Road 11/CR M
Cassin's Sparrow (2) (Mlodinow) first 9/4

Prowers County
++++Lamar Community College
Northern Cardinal (2) (Percival) last 9/5
American Redstart (Percival) first 9/5
Chestnut-sided Warbler (1st fall female) (Leatherman:Thompson) first 9/4
++++Lamar (14th & Parkway)
Great Crested Flycatcher (Dorothy Russell) first 9/5
Red-eyed Vireo (Russell) first 9/5
Baltimore Oriole (2) (Russell) first 9/5


Cheyenne County
++++County Road 34, north of CR T
Pectoral Sandpiper (1) (Mlodinow) first 9/1
++++County Road 31 & CR J
Red-headed Woodpecker (5) (Mlodinow) first 9/1
Dickcissel (Mlodinow) first 9/1
Baltimore Oriole (2) (Mlodinow) first 9/1

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 County
++++Tamarack Ranch Wildlife Area
Red-bellied Woodpecker (Crystal Wilson) last 9/4
Least Flycatcher (Behnfield) last 9/3

Logan/Washington Counties
++++Prewitt Reservoir & Area
Semipalmated Plover (Mlodinow/Tom & Debbie Behnfield) (first 8/29) last
Marbled Godwit (Blue/Behnfield) first (first 8/24) last 9/3

Washington County
++++Last Chance Rest Stop
++++Last Chance Rest Stop
Northern Waterthrush (Mark Miller/Candice Johnson) (first 8/27) last 9/5
Least Flycatcher (Candice Johnson) first 9/5
Cassin's Vireo (David Dowell/Shoup) (first 9/1) last 9/4

Yuma County
++++Yuma County Road 45
Greater Prairie-Chicken (7) (Stevens:Kosten/Robert Beuachamp) (first
2/18) last 9/2
++++Bonny Reservoir Area
Northern Cardinal --Foster's Grove (Linda Lee) last 9/4
Red-headed Woodpecker
(5) --wagon wheel (Linda Lee) last 9/4
(4) --fosters grove (Linda Lee) last 9/4
American Redstart --wagon wheel (Linda Lee) first 9/4


Alamosa County
++++Great Sand Dunes National Monument
Pinyon Jay (8) --Visitor's Center (CoBus Groups/JoAnn Riggle) (first
6/28) 30; last 9/5
++++Blanca Wetlands
Snowy Plover --Pond 46 (Daniel Toronto:Leah Dodd/JoAnn Riggle) (first
7/16) last 9/3
++++Zapata Falls & area
Black Swift (16) (CoBus Groups/Greg Levandoski) (first 6/28) 8; last 8/31

Chaffee County
++++Chaffee County
Townsend's Warbler --City Parks (Michaels & all) first 9/2
Lewis's Woodpecker
(5) --Buena Vista City Parks (Michaels & all) last 9/2
(2) --Princeton Avenue & Pleasant Ave (Michaels & all) last 9/2

Clear Creek County
++++Mt. Evans Road
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/Percival) (first 9/3) last 9/4

Fremont County
++++Brush Hollow Wildlife Area
Greater Roadrunner (Dan Brooke:Cheryl Teuton) first 9/3
Curve-billed Thrasher (2) (Brooke:Teuton) last 9/3
++++Hayden Creek
American Three-toed Woodpecker (4) (Michaels & all) first 9/2
Williamson's Sapsucker (pair) (Michaels & all) first 9/2
Northern Pygmy-Owl (Michaels & all) first 9/2
Flammulated Owl (Michaels & all) first 9/2
Boreal Owl --Galena Peak trailhead (Michaels & all) first 9/2

La Plata County
++++Oxbow Park & Preserve
Lewis's Woodpecker (4) (Jason St. Pierre) first 9/4
++++Animas River Trail
Williamson's Sapsucker --behind 4Corners Riversports (Morris/Jason St.
Pierre) (first 8/26) last 9/3
American Redstart (female type) --behind 4 Corners Riversports (Jason St.
Pierre) first 9/2
Lewis's Woodpecker (5) -- Bridge area near Rio Vista Circle (Jason St.
Pierre) first 9/1

Mesa County
++++James Robb Colorado River State Park
Black Phoebe (Brett Walker) last 9/4

Montrose County
++++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/Erik Sauder) (first 6/11) 1; last 8/31

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

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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