Date: 9/22/18 9:38 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 22, 2018
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: 9/21/2018
Adams (Pectoral Sandpiper)
Arapahoe (Mew Gull)
Boulder (Broad-winged Hawk, Sage Thrasher, Williamson's Sapsucker)
Denver (Green Heron)
El Paso (Black-throated Gray Warbler, Cassin's Vireo)
El Paso/Pueblo (SEDGE WREN, Ladder-backed Woodpecker, Eastern Phoebe,
Cassin's Vireo, Red-eyed Vireo, Curve-billed Thrasher, Chestnut-collared
Longspur, Least Flycatcher, Northern Mockingbird)
Fremont (Western Screech-Owl)
Jefferson (Ruby-throated Hummingbird)
Larimer (Common Tern, SMITH'S LONGSPUR, Indigo Bunting, Eastern
Screech-Owl, White-tailed Ptarmigan, Boreal Owl, American Three-toed
Woodpecker, Brown-capped Rosy Finch)
Lincoln (Mountain Plover, Gray Flycatcher)
Logan (Red-bellied Woodpecker, American Redstart)
Montrose (Broad-winged Hawk, Black Phoebe)
Phillips (Alder Flycatcher)
Pueblo (Long-tailed Jaeger, Parasitic Jaeger, Common Tern)
Routt (Sagebrush Sparrow)
Sedgwick (Red-bellied Woodpecker, White-throated Sparrow)


Adams County
++++Clear Creek Valley Park Map
Pectoral Sandpiper (Gabriel Wiltse) reported 9/21
++++Barr Lake
Gray Flycatcher (McBurney) first 9/20
Townsend's Warbler (2) (McBurney) first 9/20
Northern Waterthrush (McBurney) first 9/20
Red-eyed Vireo (McBurney) first 9/19

Arapahoe County
++++Cherry Creek Reservoir area
Mew Gull (Ben Sampson/Dave King) (first 8/13) last 9/21
++++Coal Creek Regional Park
Red-eyed Vireo --east end of trail (Terry Michaels) first 9/18

Boulder County
++++230 Francis Street, Longmont
Broad-winged Hawk (Jeff Yegian) first 9/21
++++Mesa Reservoir Map
Sage Thrasher (17) (Nunes/David Waltman) (first 9/20) 13; last 9/21
Gray Flycatcher (Christian Nunes) first 9/20
++++Jamestown, Owens Flats loop
Williamson's Sapsucker (Bill Burton) first 9/21
++++Apple Valley Road, north of Lyons
Cassin's Vireo (Chris Brown/Luke & Tracy Pheneger) (first 9/15) last 9/19
++++Pleasant View Marsh
Black-and-white Warbler (Ernest Crvich) first 9/19
++++Brainard Lake Area, Mt Audubon Trail
White-tailed Ptarmigan (Chris Brown) 3; last 9/19
Dusky Grouse (Chris Brown) last 9/19
Brown-capped Rosy Finch (3) (Chris Brown) last 9/19
++++Boulder (4949 Pearl East Circle)
Broad-winged Hawk (Scott Severs) first 9/19

Denver County
++++Bluff Lake Nature Area
Green Heron (George Ho/Dave King) (first 6/21) last 9/21

Douglas County
++++Cherry Creek Trail & Walker Pit Map
Eastern Bluebird (Hugh Kingery) first 9/20

El Paso County
++++Fox Run Regional Park
Black-throated Gray Warbler (Jan Allbright:Richard Bunn) first 9/21
++++Sand Creek Map
Cassin's Vireo --Dublin Blvd to Woodmen Road (Alan Versaw) first 9/21

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Sedge Wren --below southeast side of dam (David Tonnessen) first 9/21
(all above: Rose Pond, Pueblo County)
Ladder-backed Woodpecker (Tonnessen) last 9/21
Eastern Phoebe (Tonnessen) first 9/21
Cassin's Vireo (Tonnessen) first 9/21
Red-eyed Vireo (Tonnessen) first 9/21
Curve-billed Thrasher (Tonnessen) 5; last 9/21
Chestnut-collared Longspur (Tonnessen) last 9/21
Palm Warbler (Hinds:Tonnessen/Tonnessen) (first 9/19) last 9/21
(all above: Headquarters, Pueblo County)
Least Flycatcher (Jim Merritt) (first 9/19) last 9/21
Cassin's Vireo (Kim Geissler/Merritt) (first 9/8) last 9/21
Northern Mockingbird (Jim Merritt) last 9/21
Ladder-backed Woodpecker (Jim Merritt) last 9/20
Curve-billed Thrasher (Jim Merritt) last 9/20
(above: banding station unless stated elsewhere, El Paso County)

Jefferson County
++++4400 West Bow Mar Drive, Littleton Map
Ruby-throated Hummingbird (Tina Jones) (first 9/19) last 9/21
(use chairs in backyard, let Tina know if coming: <tjcalliope...>)
++++Corwina Park Map
Northern Pygmy-Owl (Reed Gomer) first 9/21
++++Standley Lake Map
Common Tern (David Chenack) first 9/20

Jefferson/Douglas County
++++Chatfield Reservoir
(NOTE: see directions on construction updates)
Eastern Phoebe --Deer Creek, north end of swim beach
(Farrell:Madsen/Raker:Chavez) (first 9/19) last 9/20
Eastern Phoebe (2) --Denver Botanic Gardens (Cynthia Madsen) last 9/20
Northern Waterthrush (2) --gazebo heronry overlook area (Ted Uhlemann)
first 9/20

Larimer County
++++Boyd Lake State Park Map
Common Tern (3) (Komar:Wehtje/Komar) (first 9/16) 1; last 9/21
Smith's Longspur (Nick Komar) first 9/21
Indigo Bunting (Nick Komar) first 9/21
++++CSU Environmental Learning Center Map
Eastern Screech-Owl (Lori Zabel) first 9/21
++++Spring Canyon Community Park Map
Eastern Screech-Owl (Kevin Keirn) last 9/21
++++Rocky Mountain National Park
White-tailed Ptarmigan (4) --Ute Trail (Carl Huffman/John Sherwood)
(first 7/13) 1; last 9/21
Boreal Owl --Hidden Valley (Stevens/Gloria Nilolai) (first 6/11) last 9/21
American Three-toed Woodpecker (1) --Rainbow Curve (Carl Bendorf) 2; last
Brown-capped Rosy Finch (250) --Lava Cliffs pullover (Carl Bendorf) last
++++Grandview Cemetery Map
American Redstart (Leatherman/Josh Bruening) (first 9/19) last 9/20
++++Wellington Wildlife Area, Cobb Lake Map
Common Tern (3) (Andy Bankert:Nick Komar) first 9/20
Cassin's Vireo (Olson:Bankert/Bankert:Komar) (first 9/16) last 9/20
Sage Thrasher (Olson:Bankert/Bankert:Komar) (first 9/16) 2; last 9/20
++++Horseshoe Lake
Mew Gull --pond north of lake (Nick Komar) first 9/19

Pueblo County
++++Pueblo Reservoir
Long-tailed Jaeger (2) (Percival/Jerry DeBoer) (first 9/13) 1; last 9/21
Parasitic Jaeger (Percival/Jerry DeBoer) (first 9/13) last 9/21
Common Tern (6) (Percival/Christian Walker) (first 9/19) last 9/21
++++Valco Ponds Wildlife Area
Green Heron (David Tonnessen) last 9/19

Weld County
++++Crow Valley Map
Cassin's Kingbird (David Leatherman) first 9/20
++++Baxter Lake Map
Marbled Godwit (1) (Mlodinow) (first 9/6) 1; last 9/20
++++Union Reservoir & area
Common Tern (Mlodinow/John Rutenbeck) (first 9/15) last 9/19
++++Pawnee National Grasslands area
Sage Thrasher --CR 96/east/CR 69 (Marcel Such) first 9/19


Lincoln County
++++County Road L, west of CR 19
Mountain Plover (12) (Joey Kellner:Dean Shoup) first 9/21
++++Karval Reservoir Wildlife Area Map
Gray Flycatcher (Kellner:Shoup) first 9/21

Otero County
++++Lake Holbrook
Pectoral Sandpiper (3) (Dowell/Suddjian) (first 9/15) 2; last 9/19
Red-necked Phalarope (19) (Suddjian & all) (first 8/27) last 9/19

Prowers County
Ruby-throated Hummingbird --S. 13th Street/W. Parkway Drive (Russell)
(first 9/16) 2 male, 1 female; last 9/19


Logan County
++++Tamarack Ranch Wildlife Area
Red-bellied Woodpecker (1) (Bez Bezuidenhout) last 9/20
American Redstart (Bezuidenhout) first 9/20
Eastern Screech-Owl (Stevens:Michaels) last 9/19
Yellow-billed Cuckoo (Stevens:Michaels) last 9/19
Red-headed Woodpecker (4) (Stevens:Michaels) last 9/19
Field Sparrow (Stevens:Michaels) last 9/19
Cassin's Vireo (Stevens:Michaels) last 9/19
Blue-headed Vireo (Stevens:Michaels) last 9/19
Nashville Warbler (Stevens:Michaels) last 9/19
Magnolia Warbler (Stevens:Michaels) last 9/19
Blackburnian Warbler (Stevens:Michaels) last 9/19
++++Red Lion Wildlife Area
Cassin's Kingbird (Stevens:Michaels) first 9/19
Nashville Warbler (Stevens:Michaels) first 9/19
(above: Little Jumbo Reservoir)

Logan/Sedgwick Counties
++++Jumbo Reservoir
Pectoral Sandpiper (15) (Bill Kaempfer/Stevens:Michaels) (first 9/13)
last 9/19
Common Tern (Stevens:Michaels) first 9/19

Logan/Washington Counties
++++Prewitt Reservoir area
Eastern Screech-Owl (Stevens) last 9/18
Red-necked Phalarope (2) (Doug Faulkner/Stevens) (first 8/21) 21; last
Common Tern (Bob Spencer/Stevens) (first 9/1) 1; last 9/18

Morgan County
++++Jackson Reservoir & area
Cassin's Vireo (Stevens) first 9/18
Red-eyed Vireo (Stevens) first 9/18
Blackpoll Warbler (Stevens) first 9/18
Townsend's Warbler (2) (Stevens) first 9/18
Long-eared Owl (Stevens) last 9/18

Phillips County
++++Holyoke Fishing Pond Map
Alder Flycatcher (Stevens:Michaels) first 9/21

Sedgwick County
++++Ovid Map
Red-bellied Woodpecker --Ovid Woods (Stevens:Michaels) last 9/20
White-throated Sparrow --Ovid Sewage Ponds (Stevens:Michaels) last 9/20
++++Sedgwick Bar Wildlife Area Map
Red-bellied Woodpecker (Stevens:Michaels) first 9/20


Alamosa County
++++Mosca Pass Trail
Cassin's Vireo (John Rawinski) first 9/20

Clear Creek County
++++Mt. Evans Road
Barrow's Goldeneye (up to 11) --Echo Lake (Nathan Senner/Bob Harvey)
(first 5/2) 3; last 9/17
White-tailed Ptarmigan (2) --south/Summit Lake area
(Stevens:Michaels/Harvey) (first 5/30) last 9/17
Brown-capped Rosy Finch (3) --Summit Lake (Stevens:Michaels/Harvey)
(first 5/30) 2; last 9/17
American Three-toed Woodpecker --Echo Lake Campgrounds
(Stevens:Michaels/Harvey) (first 5/30) last 9/17

Costilla County
++++Smith Reservoir Map
Sabine's Gull (1) (David Dowell/John Rawinski) (first 9/16) last 9/20
Long-billed Curlew (Rawinski) first 9/20

Fremont County
++++Rouse Park Map
Western Screech-Owl (Elaine Wagner) 3; last 9/21
++++Skyline Drive & Park
Curve-billed Thrasher (Jerry DeBoer) (first 6/16) last 9/19

Jackson County
++++County Road 22
Greater Sage-Grouse (18) (Kathy Carroll/Diane Persons) (first 9/18) last

Mesa County
++++Connected Lakes State Park Area
Townsend's Warbler (Adam Cupito) first 9/19
++++Powderhorn Ski Area, Grand Mesa (Hwy 65)
Lewis's Woodpecker (Mike Henwood) first 9/19
Olive-sided Flycatcher (Mike Henwood) first 9/19
Cassin's Vireo (Mike Henwood) first 9/19
Pinyon Jay (35) (Mike Henwood) first 9/19

Montrose County
++++Nucla Town Reservoir Map
Broad-winged Hawk (flyover, gone) (Dexter:Wright) first 9/21
Black Phoebe (2) (Coen Dexter:Brenda Wright) (first 4/16) 1; last 9/21
++++Nucla Map
Pinyon Jay (52) --East 5th Avenue (Dexter:Wright) last 9/20

Ouray County
++++Ouray Perimeter Trail Map
Cassin's Vireo (Jon Horn/Woodie Lackey) (first 9/10) last 9/20

Routt County
++++King Mountain Trail
Sagebrush Sparrow (JoAnn Riggle) first 9/21

Saguache County
++++Russell Lakes Wildlife Area Map
Cassin's Vireo (Jon Horn) first 9/20
American Bittern (Charles Martinez) last 9/19

San Miguel County
++++Norwood Map
Northern Mockingbird (2) --see map (George Steele) first 9/20

Summit County
++++Dillon Reservoir Map
Sage Thrasher --Frisco marina area (M. Walt) first 9/20

Teller County
++++Highway 67
Olive-sided Flycatcher (Nathan Pieplow) first 9/20

Good Birding!

Directions to birding spots and s on CoBus website:

Amy Davenport, Secretary, Colorado Birding Society Denver, CO
Contact CoBus/Report Interesting Birds: 303-324-7994
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