Date: 9/3/17 3:57 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 3, 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: 9/2/2017
Adams (Sage Thrasher, Dickcissel, Gray Flycatcher, Blackpoll Warbler)
Arapahoe (Sabine's Gull, Lesser Black-backed Gull, Red-headed Woodpecker)
Boulder (Black-and-white Warbler)
Chaffee (Townsend's Warbler, Lewis's Woodpecker)
El Paso (Greater Roadrunner)
El Paso/Pueblo (Ladder-backed Woodpecker, Least Flycatcher, Curve-billed
Thrasher, Blue-headed Vireo)
Fremont (American Three-toed Woodpecker, Williamson's Sapsucker, Northern
Pygmy-Owl, Flammulated Owl, Boreal Owl)
Jefferson/Douglas (Black Phoebe, Eastern Phoebe)
La Plata (American Redstart)
Mesa (Gunnison Sage-Grouse, Williamson's Sapsucker)
Prowers (Great Crested Flycatcher, Purple Martin)
Pueblo (Black Swift, Dickcissel)
Weld (Least Flycatcher)


Adams County
++++Rocky Mountain Arsenal
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
++++Barr Lake
Blackpoll Warbler --banding station (McBurney) first 9/2
Townsend's Warbler (6) (Pheneger/McBurney) (first 8/27) 2; last 9/1
Least Flycatcher (David Dowell/Rebecca Laroche) (first 8/10) last 8/30
++++South Platte Birding Area
Mississippi Kite --see map (Neil Reinecke) first 8/31

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
++++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
++++Eastern Arapahoe County
Red-headed Woodpecker (adult, 2 juvenile) (Terry Michaels/Dave King)
(first 8/21) last 8/30
(Kiowa Creek at County Line Road; seen in Arapahoe & Elbert Counties)
Burrowing Owl (Stevens:Kosten/Dave King) (first 5/5) Last 8/30
(--CR 30, 0.5 miles/east/CR 149)

Boulder County
++++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
++++Fourth of July Campground
Brown-capped Rosy Finch (4) (Luke Pheneger/Stephen Chang) (first 7/30) 2;
last 8/31

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

El Paso County
++++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
++++Quail Lake
American Redstart (Tanja Britton) first 8/31
++++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 (Robb Hinds) first 9/2
(above: Pueblo County)

Jefferson/Douglas County
++++Chatfield Reservoir area
Black Phoebe --swim beach (Thomas Holub) reported 9/2
Black Phoebe --perimeter road (Phil Lyon) reported 9/2
Eastern Phoebe --perimeter road (Lyon) reported 9/2
Lesser Black-backed Gull --swim beach (Holden:Glass/Matt Clark) (first
8/26) last 9/1
Eastern Phoebe --Gazebo Heronry Overlook (Isaiah McCourt) first 9/1

Larimer County
++++Boyd Lake State Park
Mew Gull --swim beach (Nick Komar) first 8/31
++++Timnath Reservoir
Caspian Tern (2) (Joe Mammoser) (first 8/16) 1; last 8/31
++++Grandview Cemetery
American Redstart (David Leatherman) first 8/30

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
++++Runyon Lake
Green Heron (Mark Yaeger) first 8/31

Weld County
++++Crow Valley Campground
Least Flycatcher (Chris Goulart) last 9/2


Bent County
++++Tempel Grove
Ovenbird --below bench (Duane Nelson) first 9/2
++++Fort Lyons Wildlife Easement Area & Wildlife Area
Black-and-white Warbler (Duane Nelson) first 8/30
Great Crested Flycatcher (Nelson) first 8/30
Yellow-billed Cuckoo (Nelson) first 8/30
(All Above: 1.5 miles east of CR 16 & CR JJ)
++++John Martin Reservoir area
American Redstart (Holmgren/Nelson) (first 8/28) last 8/30
Baltimore Oriole (Nelson) first 8/30
Willow Flycatcher (Nelson) first 8/30
Yellow-billed Cuckoo (Nelson) first 8/30
(all above: Lake Hasty Campgrounds)
Yellow-billed Cuckoo --Clayton grove (Duane Nelson) first 8/30

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


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

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

Fremont County
++++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

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
++++West of Red Lion Wildlife Area
Pectoral Sandpiper (3) (Kath Mihm-Dunning) first 9/1
++++Sterling Reservoir and Area
Common Tern (Mark Holmgren) first 8/31

Logan/Washington Counties
++++Prewitt Reservoir & Area
Least Flycatcher (David Blue/Dan Brooke) (first 8/24) last 9/1
Semipalmated Plover (Mlodinow/Loch Kilpatrick) (first 8/29) 5; last 8/31
Pectoral Sandpiper (2) (Dean Shoup/Kilpatrick) (first 8/6) 15; last 8/31
Willet (Kilpatrick) first 8/31
Caspian Tern (Loch Kilpatrick) first 8/31
Common Tern (Kilpatrick) first 8/31
Olive-sided Flycatcher (Mlodinow/Kilpatrick) (first 8/29) last 8/31
Least Flycatcher (David Blue/Loch Kilpatrick) (first 8/24) last 8/31
Great Crested Flycatcher (Kilpatrick) last 8/31
Cassin's Vireo (Kilpatrick) first 8/31
Dickcissel (2) --Hwy 6, south of CR 57 (Kilpatrick) first 8/31
(best shorebird location: southwest corner/access from inlet canal)

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

Morgan County
++++Brush Wildlife Area
Red-headed Woodpecker (2) (Norm Lewis) last 8/31
Eastern Bluebird (Norm Lewis) last 8/31
++++Highway 144 south of Orchard
Sandhill Crane (Loch Kilpatrick) first 8/31

Park County
++++Antero Reservoir
Long-tailed Jaeger (Mlodinow/Michaels &amp; all) (first 8/26) last 9/1

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
++++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
++++Stalker Pond
Least Flycatcher (Mlodinow) first 8/30
Eastern Screech-Owl (Mlodinow) last 8/30
Great Crested Flycatcher (Mlodinow) first 8/30
Ovenbird (Mlodinow) first 8/30
Northern Cardinal (4) (Mlodinow) last 8/30
Baltimore Oriole (4) (Mlodinow) last 8/30
++++Wray Fishing Unit
Baltimore Oriole (2) (Mlodinow) last 8/30
++++County Road 54, east of Highway 385
Great Crested Flycatcher (Steve Mlodinow) first 8/30
++++County Road Y/south/CR 59
Barn Owl (Mlodinow) first 8/30
Dickcissel (3) (Mlodinow) first 8/30
Baltimore Oriole (2) (Mlodinow) first 8/30
++++Patent Creek Playa/CR 58
Pectoral Sandpiper (Mlodinow) first 8/30


Alamosa County
++++Zapata Falls & area
Black Swift (16) (CoBus Groups/Greg Levandoski) (first 6/28) 8; last 8/31
Pinyon Jay (50) (Norm Lewis/Levandoski) (first 8/17) 3; last 8/30
Gray Flycatcher (Levandoski) first 8/30
(All above: Falls)
Gray Flycatcher (5) --Campgrounds, see map (Levandoski) (first 8/30) 2;
last 8/31
Pinyon Jay (1) (Levandoski) first 8/31

Archuleta County
++++Pagosa Springs & area
Lewis's Woodpecker (14) --San Juan Riverwalk (Lindell Dillon) 5; last

Eagle County
Juniper Titmouse --see map (Rick Shearer) first 8/30

La Plata County
++++Animas River Trail
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
(4) --RiverGate (Gary Koehn) first 8/30
++++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
++++Horsethief Canyon Wildlife Area
Pinyon Jay (10) (Mike Henwood) first 9/1
Green Heron --same pond as NOWA (Mike Henwood) first 8/29
Northern Waterthrush (Mike Henwood) first 8/29
(edge of largest pond, 1/2 mile from parking lot)
Nashville Warbler --1/4 mile from parking lot (Mike Henwood) first 8/29

Ouray County
++++Ouray and Box Canyon Falls
Black Swift (2) (Glenn Walbek/Erik Sauder) (first 6/11) 1; last 8/31

San Miguel County
++++Disappointment Creek at CR 19Q
Black-throated Sparrow (Brenda Wright:Coen Dexter) first 9/1
++++Ophir Pass
Brown-capped Rosy Finch (2) (Washburn:Simmons/Thomas Guggemoos) (first
6/25) 20, last 8/29
NOTE: not recommended without 4-wheel drive

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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