Date: 9/4/17 4:47 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 4, 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: 9/3/2017
Adams (Cassin's Vireo, Eastern Phoebe)
Alamosa (Snowy Plover)
Arapahoe (American Redstart)
Baca (Upland Sandpiper, Greater Roadrunner, Yellow-billed Cuckoo, Least
Flycatcher, Eastern Phoebe, Great Crested Flycatcher, Blue-headed Vireo,
American Redstart, Chestnut-sided Warbler, Ovenbird, Tennessee Warbler,
Nashville Warbler, Broad-winged Hawk, American Redstart)
Boulder (Caspian Tern, Black Swift, American Three-toed Woodpecker)
Custer (Sabine's Gull)
El Paso (Least Flycatcher)
Fremont (Greater Roadrunner, Curve-billed Thrasher)
Jefferson/Douglas (Lesser Black-backed Gull, Sabine's Gull, Black Phoebe,
Eastern Phoebe, Pectoral Sandpiper, Cassin's Vireo, American Redstart)
Kiowa/Bent (Long-billed Curlew, Greater Roadrunner, Barn Owl)
La Plata (Williamson's Sapsucker)
Larimer (Cassin's Kingbird, Black Swift, Lewis's Woodpecker, Red-necked
Phalarope, Magnolia Warbler)
Logan (Red-bellied Woodpecker, Least Flycatcher)
Logan/Washington (Semipalmated Plover, Marbled Godwit)
Moffat (Black-throated Gray Warbler)
Park (Long-tailed Jaeger, Common Loon)
Sedgwick (Baltimore Oriole)
Weld (Least Flycatcher, American Redstart, Red-eyed Vireo,
Chestnut-collared Longspur)
Yuma (Greater Prairie-Chicken)


Adams County
++++Barr Lake
Cassin's Vireo (2) (Stevens/Riley Morris) (first 8/14) last 9/3
Blackpoll Warbler --banding station (McBurney) first 9/2
Townsend's Warbler (6) (Pheneger/McBurney) (first 8/27) 2; 9/1
++++Rocky Mountain Arsenal
Eastern Phoebe</font> (4) --Bluestem Trail (Dave Fundakowski) last 9/3
Sage Thrasher (6+) (Dave King) first 9/2
(Wildlife Drive, especially mile 5.6 to 6.1)
Dickcissel --Willdlife Drive, mile 6.1 (Dave King) first 9/2
Gray Flycatcher (Rebecca Laroche) first 9/2

Adams/Denver Counties
++++First Creek Trail
Barn Owl --Denver Cty (Andrew Fontenot) last 9/1
++++DIA Owl Loop
Burrowing Owl (1) --W. Cargo Road & Third Creek (Kathy & Jonathan Haley)
4; last 8/31

Arapahoe County
++++St. Mary Church
American Redstart (David Suddjian) first 9/3
++++Aurora Reservoir
Sabine's Gull --scuba beach (David Suddjian/Dave King) (first 9/1) last
Lesser Black-backed Gull (1+) (Dave King) first 9/2
++++Great Plains Conservation Center
Red-headed Woodpecker (Karen Metz) first 9/2

Boulder County
++++Walden Ponds
Caspian Tern (Pat Heller) first 9/3
American Bittern (Carl Benforf:Bart Deferme) first 8/29
++++Wild Basin Section of Rocky Mountain National Park
Black Swift (4) --Ouzel Falls (Yappert) last 9/3
American Three-toed Woodpecker (Yappert) last 9/3
++++South Boulder Creek Trail
Black-and-white Warbler (Joe Luedtke) first 9/2
++++Warembourg Open Space Area & Dutch Creek Park
Olive-sided Flycatcher (Jack Bushong) first 9/1

Denver County
++++Bluff Lake Nature Area
Wild Turkey (Michaels/Jason Bidgood) (first 8/16) last 9/2

El Paso County
++++Rampart Park
Least Flycatcher (John Drummond) first 9/3
++++Kettle Lakes
Olive-sided Flycatcher (Robb Hinds) first 9/1
Sage Thrasher (Robb Hinds) first 9/1
++++Fountain Creek Regional Park
Mississippi Kite (2) (David & Cheryl Hubbard) last 9/1
++++Clear Spring Ranch
Red-eyed Vireo --banding station (Steve Brown) first 9/1
++++Hanover Road and area
Greater Roadrunner (Tonnessen) last 9/2

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Ladder-backed Woodpecker (David Tonnessen) last 9/2
Least Flycatcher (2) (Tonnessen) last 9/2
Curve-billed Thrasher (Tonnessen) last 9/2
(all above: wooded area, El Paso County)
Blue-headed Vireo --Rose Pond (Robb Hinds) first 9/2
(above: Pueblo County)

Jefferson/Douglas County
++++Chatfield Reservoir area
Lesser Black-backed Gull --marina sandspit (Holden:Glass/Joey Kellner)
(first 8/26) last 9/3
Sabine's Gull (juv) --marina sandspit (Joey Kellner) first 9/3
Black Phoebe --north of swim beach (Holub/Kellner) first (first 9/2) last
Eastern Phoebe (Brian Johnson) first 9/3
Eastern Phoebe --Gazebo Heronry Overlook (Isaiah McCourt/Stevens) (first
9/1) last 9/3
Pectoral Sandpiper --Plum Crk Delta (Paul Turelli/Richard Stevens) (first
9/2) last 9/3
Cassin's Vireo --Plum Crk Delta (Stevens) first 9/3
American Redstart (2) --Audubon Center (Stevens) last 9/3

Larimer County
++++Rocky Mountain National Park
Cassin's Kingbird --Upper Beaver Meadows (Luke Pheneger) first 9/3
American Three-toed Woodpecker
(1) --Ouzel Falls (Emil Yappert) last 9/3
(1) --Endovalley (Luke Pheneger) last 9/3
Magnolia Warbler (Luke Pheneger) reported 9/3
(north of Upper Beaver Meadows parking lot)
++++Hewlett Gulch
Lewis's Woodpecker (5) (Lori Zabel) first 9/3
++++Duck Lake
Red-necked Phalarope (3) (Gwen Moore/Nick Komar) (first 8/14) last 9/2

Pueblo County
++++Lake Beckwith
Black Swift (3) (Dave Silverman/Brandon Percival) (first 20) last 9/2
++++Behind TruValue Hardware, Colorado City
Dickcissel (Percival) first 9/2

Weld County
++++Norma's Grove
Least Flycatcher (Jean Olson) first 9/3
American Redstart (3) (Rutherford) first 9/3
Red-eyed Vireo (Gene Rutherford) first 9/2
++++Eaton Cemetery
Red-eyed Vireo (Gene Rutherford) first 9/3
++++Crow Valley Campground
Least Flycatcher (Chris Goulart) last 9/2
++++Pawnee National Grasslands area
Chestnut-collared Longspur
(15) --CR 47/south/CR 116 (Rebecca Laroche/Adam Dudley) (first 8/19) 40;
last 9/2
(2) --CR 96/east/CR 69 (Dudley) last 9/2


Baca County
++++ Two Buttes Reservoir & area
Upland Sandpiper (Mlodinow) first 9/3
Greater Roadrunner (3) (Mlodinow) last 9/3
Yellow-billed Cuckoo (1) (Gwen Moore/Mlodinow) (first 7/18) 3; last 9/3
Least Flycatcher (Mlodinow) last 9/3
Eastern Phoebe (Mlodinow) first 9/3
Great Crested Flycatcher (2) (Mlodinow) first 9/3
Blue-headed Vireo (2) (Mlodinow) first 9/3
American Redstart (3) (Mlodinow) first 9/3
Chestnut-sided Warbler (3) (Mlodinow) first 9/3
Ovenbird (Mlodinow) first 9/3
Tennessee Warbler (Mlodinow) first 9/3
Nashville Warbler (Mlodinow) first 9/3
++++Turk's Pond
Broad-winged Hawk (Steve Mlodinow) first 9/3
American Redstart (Mlodinow) first 9/3

Bent County
++++Tempel Grove
Ovenbird --below bench (Duane Nelson) first 9/2

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

Prowers County
++++Lamar Community College
Great Crested Flycatcher (Leatherman) 9/2
Purple Martin (flyover) (Leatherman) 9/2


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
Red-headed Woodpecker (David Dowell) last 9/1
Olive-sided Flycatcher (2) (Dowell) first 9/1
Least Flycatcher (2) (Dowell) first 9/1
Black-and-white Warbler (Dowell) first 9/1
American Redstart (Dowell) first 9/1

Logan County
++++Tamarack Ranch Wildlife Area
Red-bellied Woodpecker (11) (Behnfield) last 9/3
Least Flycatcher (Behnfield) last 9/3
++++West of Red Lion Wildlife Area
Pectoral Sandpiper (3) (Kath Mihm-Dunning) first 9/1

Logan/Sedgwick County
++++Sand Draw Wildlife Area
Baltimore Oriole (Robert Beauchamp) first 9/2

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
Least Flycatcher (David Blue/Dan Brooke) (first 8/24) last 9/1
Red-necked Phalarope (2) (Bushong/Brooke:Teuton) (first 8/20) 2; last 9/1
Common Tern (Kilpatrick/Brooke:Teuton) (first 8/31) last 9/1

Logan/Sedgwick County
++++Jumbo Reservoir
Semipalmated Plover (5) (Brian Johnson/Kathy Mihm-Dunning) (first 8/23)
last 9/1
Pectoral Sandpiper (Steve Larson/Holmgren) (first 8/22) last 8/31

Phillips County
++++County Road 14 & CR 31
Barn Owl (Robert Beauchamp) first 9/1

Washington County
++++Last Chance Rest Stop
Cassin's Vireo (David Dowell) first 9/1
Northern Waterthrush (Mark Miller/Dowell) (first 8/27) last 9/1
++++Washington Country Club Golf Course Park
American Redstart (Kathy Mihm-Dunning) first 9/1
NOTE: not on Golf Course, but Akron Pond, County Land just north of Golf

Yuma County
++++Yuma County Road 45
Greater Prairie-Chicken (7) (Stevens:Kosten/Robert Beuachamp) (first
2/18) last 9/2
++++Bonny Reservoir Area
Upland Sandpiper --Hale Ponds (Steve Mlodinow) first 9/1
Eastern Screech-Owl --Hale Ponds (Mlodinow) last 9/1
Eastern Screech-Owl --Hale (Mlodinow) last 9/1
Red-bellied Woodpecker --Hale (Mlodinow) last 9/1
Red-bellied Woodpecker (3) --Hale Ponds (Mlodinow) last 9/1
Red-headed Woodpecker (6) --Hale Ponds (Mlodinow) last 9/1
Least Flycatcher (3) --Hale Ponds (Mlodinow) first 9/1
Great Crested Flycatcher --Hale (Mlodinow) last 9/1
Townsend's Warbler --Hale Ponds (Mlodinow) first 9/1
Rose-breasted Grosbeak --Hale Ponds (Mlodinow) first 9/1
Baltimore Oriole (5) --Hale Ponds (Mlodinow) first 9/1


Alamosa County
++++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

Custer County
++++DeWeese Reservoir
Sabine's Gull (juvenile) (Cheryl Teuton) first 9/3

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
++++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
++++Huck Finn Pond & Animas River Trail
Lewis's Woodpecker (Ryan Votta) 6; last 8/31

Mesa County
++++Pinyon Mesa
Gunnison Sage-Grouse (Denise & Mark Vollmar) reported 9/2
Williamson's Sapsucker (Vollmar) first 9/2

Moffat County
++++Loudy Simpson Park
Black-throated Gray Warbler (Jan Leonard) first 9/2

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/Loch Kilpatrick) (first 8/26) last 9/3
++++Eleven Mile Reservoir
Common Loon (Kilpatrick:Walbek) first 9/3

San Miguel County
++++Disappointment Creek at CR 19Q
Black-throated Sparrow (Brenda Wright:Coen Dexter) first 9/1

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
Subscribe to "cobirders" by sending blank email to:
cobirders-subscribe AT
Read "cobirders" at:


Join us on Facebook!