Date: 8/30/17 9:18 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for August 30, 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: 8/29/2017
Adams (American Redstart, Cassin's Vireo, Townsend's Warbler)
Adams/Denver (Burrowing Owl)
Archuleta (Lewis's Woodpecker)
Boulder (Northern Waterthrush, American Bittern, Brown-capped Rosy Finch)
Jefferson/Douglas (Lesser Black-backed Gull)
La Plata (Cassin's Vireo, Nashville Warbler, Lewis's Woodpecker, Townsend's
Larimer (Common TErn)
Logan/Washington (Semipalmated Plover, Upland Sandpiper, Pectoral
Sandpiper, Red-necked Phalarope, Eastern Screech-Owl, Olive-sided
Flycatcher, Great Crested Flycatcher, Red-eyed Vireo, Ovenbird, American
Mesa (Green Heron, Northern Waterthrush, Nashville Warbler)
Ouray (Black Swift)
San Miguel (Brown-capped Rosy Finch)
Sedgwick (Least Flycatcher, Red-headed Woodpecker, Baltimore Oriole)


Adams County
++++Barr Lake
American Redstart (Meredith McBurney/Candice Johnson) (first 8/26) 1;
last 8/29
Cassin's Vireo (2) (Stevens/Jacob Washburn) (first 8/14) last 8/29
Townsend's Warbler (6) (Pheneger/Washburn) (first 8/27) last 8/29
Red-headed Woodpecker (Luke Pheneger:Susan Wise) first 8/27
Philadelphia Vireo (Pheneger:Wise) first 8/27
Northern Waterthrush (McBurney:Stevens/Pheneger:Wise) (first 8/26) last
Nashville Warbler (Pheneger) first 8/27
Least Flycatcher --banding station (David Dowell/Pheneger) (first 8/10)
last 8/27
Black-and-white Warbler --mile 8.9 (Stevens) first 8/27
++++Rocky Mountain Arsenal
Mountain Plover --flyover, see map (Chris Goulart) reported 8/27

Adams/Denver Counties
++++DIA Owl Loop
Burrowing Owl (1) south of Pena Blvd/61st Avenue Park n Ride
(Stevens/Washburn) (first 8/25) last 8/29

Arapahoe County
++++Marjorie Perry Nature Preserve Area
Broad-winged Hawk (Jared Del Rosso) first 8/28
++++Ketring Park and Lake
Olive-sided Flycatcher (2) (Steve Altman) first 8/28
++++South Platte Park
Green Heron --see map (Robert Flozenlogen) first 8/28
++++Eastern Arapahoe County
Red-headed Woodpecker (adult, 2 juvenile) (Terry Michaels/Dave King)
(first 8/21) last 8/26
(Kiowa Creek at County Line Road; seen in Arapahoe & Elbert Counties)
Burrowing Owl (Stevens:Kosten/Dave King) first (first 5/5) Last 8/26
(--CR 30, 0.5 miles/east/CR 149)

Boulder County
++++Twin Lakes Open Space
Northern Waterthrush (Leslie S) first 8/29
++++Walden Ponds
American Bittern (Carl Benforf:Bart Deferme) first 8/29
++++Fourth of July Campground
Brown-capped Rosy Finch (4) (Luke Pheneger/Brian Johnson) (first 7/30) 5;
last 8/29

Denver County
++++Bear Creek Park
Northern Waterthrush (Doug Kibbe) first 8/28
++++Bluff Lake Nature Area
Red-eyed Vireo (Jacob Washburn/George Ho) (first 8/16) last 8/28
Wild Turkey (Jacob Washburn/George Ho) (first 8/16) last 8/28
++++18th & Glenarm, Denver
Peregrine Falcon (3) (Matt Baker) first 8/28
++++Denver City Park
Lark Bunting --Ferril Lake shore (Patrick O'Driscoll) first 8/27

El Paso County
++++Cheyenne Mountain Park
Ovenbird (15) (Deborah Barnes/Alan Versaw) (first 5/13) 1; last 8/28
++++Fountain Creek Regional Park
Mississippi Kite (2) (Tnaja Britton) last 8/28
++++Ramah Wildlife Area
Pectoral Sandpiper (3) (John Drummond/Rebecca Laroche) (first 8/26) 2;
last 8/27
Semipalmated Plover (John Drummond) first 8/26
++++Hanover Road and area
Curve-billed Thrasher --Peyton Hwy/south/Hanover (Alexander) last 8/27
Northern Mockingbird --Peyton Hwy/south/Hanover (Alexander) last 8/27
Burrowing Owl (5) (Christine Alexander) last 8/27

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Western Screech-Owl --headquarters (Christine Alexander) reported 8/27
Northern Pygmy-Owl --headquarters (Christine Alexander) reported 8/27
Northern Saw-whet Owl --headquarters (Christine Alexander) reported 8/27
(All above: Pueblo County; (quite a phenomenon if confirmed)
Ladder-backed Woodpecker (Alexander) last 8/27
Olive-sided Flycatcher --wooded areas (Kurt Mize/Alexander) (first 8/19)
last 8/27
Least Flycatcher --banding station (Alexander) first 8/27
Curve-billed Thrasher (Alexander) last 8/27
Northern Mockingbird (2) (Alexander) last 8/27
Ovenbird (2) (Alexander) first 8/27
(all above: banding station area:wooded areas)
(All above: El Paso County)

Jefferson County
++++Lower White Ranch Park
Red-eyed Vireo (Gerald Baines) first 8/28
++++Plainview Road
Olive-sided Flycatcher (Bill Kaempfer) first 8/27

Jefferson/Douglas County
++++Chatfield Reservoir area
Lesser Black-backed Gull --swim beach (Holden:Glass/Diane Roberts:Cynthia
Madsen) (first 8/26) 2; last 8/29

Larimer County
++++Boyd Lake State Park
Common Tern (Nick Komar:David Wade) first 8/29
++++Rocky Mountain National Park
American Three-toed Woodpecker
(1) --Upper Beaver Meadows (David Pettee) last 8/28
Brown-capped Rosy Finch
(1) --Alpine Visitor's Center (John Oliver) last 8/27
(2) --Lava Cliff pullover (Marion Warren/Kay Hawklee) (first 6/5) 1; last
White-tailed Ptarmigan
(2) --see map (David Stejskal) first 8/26
(up to 8) --Rock Cut Trail (Marion Warren/Shannon Skalos) (first 6/5)
last 8/17
(2) --Medicine Bow Curve (Marion Warren/Kevin Floyd) (first 6/5) 3; last
++++County Road 70 Ponds
Red-necked Phalarope --east/CR 13 (Nick Komar/Paul Ode) (first 8/26) 3;
last 8/27

Pueblo County
++++Pueblo City Park
Green Heron --Goodnight trail (Mark Yaeger) last 8/27
Black Phoebe --Goodnight trail (Yaeger) first 8/27

Weld County
++++Weld County Road 124/122 Ponds
Pectoral Sandpiper (6) --124 pond (Cynthia Kristensen) first 8/26


Alamosa County
++++Blanca Wetlands
Snowy Plover (Daniel Toronto:Leah Dodd/Rawinski) (first 7/16) last 8/25
Semipalmated Plover (John & Lisa Rawinski) first 8/25

Baca County
++++Cottonwood Canyon
Summer Tanager (Mark Holmgren) last 8/26

Bent County
++++John Martin Reservoir area
Yellow-billed Cuckoo --Hasty Union Valley Cemetery (Mark Holmgren) first
Great Crested Flycatcher (Holmgren) first 8/28
Northern Mockingbird (Holmgren) (first 8/27) last 8/28
American Redstart (Holmgren) first 8/28
Pectoral Sandpiper (Mark Holmgren) first 8/27
++++Fort Lyons Wildlife Easement Area & Wildlife Area
Yellow-billed Cuckoo (1) --CR 16/south/CR JJ (Angstman) first 8/26
Black Rail
(1) --CR 16/south/CR JJ (Christine Alexander/Joey Angstman) (first 8/12)
1; last 8/26

Crowley County
++++CR G Ponds, east of Ordway
Pectoral Sandpiper (Mark Miller) first 8/27

Prowers County
++++Lamar High School
Great Crested Flycatcher (Mark Holmgren) first 8/27


Logan/Washington Counties
++++Prewitt Reservoir & Area
Semipalmated Plover (Mlodinow) first 8/29
Upland Sandpiper (3) (Mlodinow) first 8/29
Pectoral Sandpiper (2) (Dean Shoup/Mlodinow) (first 8/6) 15; last 8/29
Red-necked Phalarope (2) (Bushong/Mlodinow) (first 8/20) 4; last 8/29
Eastern Screech-Owl (Mlodinow) last 8/29
Olive-sided Flycatcher (Mlodinow) first 8/29
Great Crested Flycatcher (Mlodinow) last 8/29
Red-eyed Vireo (Mlodinow) last 8/29
Ovenbird (Mlodinow) first 8/29
American Redstart (David Blue/Mlodinow) (first 8/24) last 8/29
(best shorebird location: southwest corner/access from inlet canal)

Logan/Sedgwick County
++++Jumbo Reservoir
Semipalmated Plover (5) (Brian Johnson/Mlodinow) (first 8/23) last 8/29
Pectoral Sandpiper (Steve Larson/Mlodinow) (first 8/22) last 8/29

Morgan County
++++Jackson Reservoir
Long-billed Curlew (Steve Mlodinow) first 8/28
Caspian Tern (3) (Mlodinow) first 8/28
Eastern Screech-Owl (2) (Mlodinow) last 8/28
Least Flycatcher (Mlodinow) first 8/28
Cassin's Vireo (Mlodinow) first 8/28
American Redstart (Queszada/Mlodinow) (first 8/27) 2; last 8/28
Townsend's Warbler (Mlodinow) first 8/28
Dickcissel (Mlodinow) first 8/28
Baltimore Oriole (Mlodinow) first 8/28

Sedgwick County
++++Sedgwick Cemetery
Least Flycatcher (Steve Mlodinow) first 8/29
Red-headed Woodpecker (Mlodinow) last 8/29
Baltimore Oriole (Mlodinow) first 8/29

Washington County
++++Last Chance Rest Stop
Northern Waterthrush (Mark Miller) first 8/27
American Redstart --behind old motel (Miller) first 8/27

Yuma County
++++County Road FF
Greater Prairie-Chicken (4) --south of 46 1/2 (Bill Kaempfer) first 8/26
++++Patent Creek Playa/CR 58
Burrowing Owl (4) (Kaempfer) first 8/26


Alamosa County
++++Blanca Wetlands
Snowy Plover --Pond 46 (Toronto:Dodd/Ed Huestis) (first 7/16) last 8/26
Semipalmated Plover (John & Lisa Rawinski) first 8/25

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

Clear Creek County
++++Mt. Evans Road
Barrow's Goldeneye (2+) --Echo Lake (Dave King/Nan Perkins) (first 5/11)
4; last 8/24
Brown-capped Rosy Finch
(2)--Summit Lake (Michaels & all/Perkins) (first 6/12) 2; last 8/24

Grand County
++++Shadowcliff Retreat Center
American Three-toed Woodpecker (Jay VaderGaast) first 8/27
++++Windy Gap Reservoir
Barrow's Goldeneye (female type) (Doug Gochfeld) (first 8/24) last 8/25

Jackson County
++++Arapaho National Wildlife Refuge and Nearby
Lark Bunting (5) (Mlodinow/Jean Olson) (first 8/27) last 8/28
Greater Sage-Grouse (15) --see map (Steve Mlodinow) last 8/27
Greater Sage-Grouse (5) --CR 31, south of Hwy 14 (Walter Wehtje) first
++++Eighteen Islands Reservoir
Buff-breasted Sandpiper (Steve Mlodinow) reported 8/27
Short-billed Dowitcher (Mlodinow) reported 8/27
Willet (Mlodinow) first 8/27
Northern Waterthrush (Mlodinow) reported 8/27
Chestnut-sided Warbler (Mlodinow) reported 8/27
Fox Sparrow (Slate-colored) (Mlodinow) reported 8/27
++++Walden Reservoir and area
Red-necked Phalarope (2) (Mlodinow) first 8/27

La Plata County
++++Animas River Trail
Cassin's Vireo --behind Home Depot (Riley Morris/Jason St. Pierre) (first
8/26) last 8/29
Nashville Warbler --across/Merucry payments (Jason St. Pierre) first 8/29
Lewis's Woodpecker --across/Merucry payments (Jason St. Pierre) first 8/29
Townsend's Warbler (2) --behind Home Depot (Dave Hawksworth) last 8/29
Northern Parula --behind Home Depot (Morris/Susan Allerton) (first 8/26)
last 8/27
Black-throated Gray Warbler --behind Home Depot (Morris/Susan Allerton)
(first 8/26) last 8/27
++++Huck Finn Pond & Animas River Trail
Lewis's Woodpecker (Morris) 13; last 8/27
Red-eyed Vireo (Morris) first 8/27
Cassin's Vireo (Ed Huestis) first 8/26
Nashville Warbler (Ed Huestis) first 8/26

Mesa County
++++Horsethief Canyon Wildlife Area
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
++++James Robb Colorado River State Park
Black Phoebe --Fruita section (Ronda Woodward) last 8/26

Moffat County
++++Casto Reservoir
Williamson's Sapsucker (Edward Lewis) first 8/27
Sagebrush Sparrow (Edward Lewis) last 8/27

Montrose County
++++Airport Lake Area
Pinyon Jay (4) (Dexter:Wright) last 8/28
Gray Flycatcher (Dexter:Wright) (first 8/25) 2; last 8/27
++++Nucla Town Reservoir
Pinyon Jay (9) (Dexter:Wright) (first 8/6) 17; last 8/26

Ouray County
++++Ouray and Box Canyon Falls
Black Swift (2) (Glenn Walbek/Jesse Huth) (first 6/11) last 8/29

Routt County
++++Stagecoach Recreational Area
Trumpeter Swan (Tresa Moulton) last 8/27

San Miguel County
++++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

Summit County
++++Green Mountain Reservoir
American Three-toed Woodpecker (Phil Lyon) last 8/27

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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