Date: 9/23/18 5:54 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 23, 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: 9/22/2018
Adams (Broad-winged Hawk, Cassin's Kingbird, Sage Thrasher, Tennessee
Adams/Denver (Cassin's Kingbird)
Boulder (Eastern Phoebe, Cassin's Vireo, Burrowing Owl, Prothonotary
Denver (Cassin's Vireo)
El Paso (Dusky Grouse)
El Paso/Pueblo (Philadelphia Vireo, Ladder-backed Woodpecker,
Yellow-bellied Sapsucker, Northern Mockingbird)
Fremont (Black Phoebe, Rufous-crowned Sparrow)
Jefferson (Ruby-throated Hummingbird, Eastern Phoebe, Sage Thrasher)
Kit Carson (Broad-winged Hawk)
La Plata (Sabine's Gull)
Larimer (Mew Gull, Mexican Duck, Sabine's Gull, Cassin's Vireo, Townsend's
Warbler, Long-eared Owl, Green Heron, Barn Owl, Eastern Screech-Owl)
Las Animas (Rose-breasted Grosbeak)
Logan (Black-bellied Plover, Sabine's Gull)
Logan/Sedgwick (Black-bellied Plover, Sabine's Gull, Common Tern, Eastern
Mesa (Sagebrush Sparrow, Gray Flycatcher, Broad-winged Hawk)
Morgan (Semipalmated Plover, Long-billed Curlew, Red-necked Phalarope)
Otero (Curve-billed Thrasher)
Ouray (Cassin's Vireo)
Pueblo (Greater Roadrunner, Lesser Black-backed Gull, Common Tern,
Parasitic Jaeger, Least Flycatcher, Gray Flycatcher, Curve-billed Thrasher,
Sage Thrasher, Indigo Bunting, White-throated Sparrow, Broad-winged Hawk)
Yuma (Red-headed Woodpecker, Eastern Phoebe, Palm Warbler, Nashville
Warbler, Northern Cardinal, Eastern Screech-Owl, Blue-headed Vireo,
Mourning Warbler, Eastern Bluebird, Gray-cheeked Thrush, Yellow-billed
Cuckoo, Magnolia Warbler)


Adams County
++++Barr Lake
Broad-winged Hawk (McBurney) first 9/22
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
++++Rocky Mountain Arsenal
Cassin's Kingbird (2) (Sheeter) last 9/22
Sage Thrasher (G. Stacks) last 9/22
Tennessee Warbler (Cathy Sheeter) first 9/22
++++Clear Creek Valley Park
Pectoral Sandpiper (Gabriel Wiltse) reported 9/21

Adams/Denver Counties
++++First Creek Trail
Cassin's Kingbird --Denver Cty (John Breitsch) last 9/22

Arapahoe County
++++Cherry Creek Reservoir area
Mew Gull (Ben Sampson/Dave King) (first 8/13) last 9/21

Boulder County
++++Golden Ponds
Eastern Phoebe (Luke Pheneger) first 9/22
Cassin's Vireo (Pheneger) first 9/22
++++Lagerman Reservoir
Burrowing Owl (Rob Cassady:Steve Frye) first 9/22
++++Pleasant View Marsh
Prothonotary Warbler (Ernest Crvich) reported 9/22
++++230 Francis Street, Longmont
Broad-winged Hawk (Jeff Yegian) first 9/21
++++Mesa Reservoir
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

Denver County
++++Denver City Park
Cassin's Vireo --near Ferril Lake (Dave King) first 9/22
++++Bluff Lake Nature Area
Green Heron (George Ho/Dave King) (first 6/21) last 9/21

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

El Paso County
++++Pikes Peak
Dusky Grouse (4) --Glen Cove (Dawn Wellington) first 9/22
++++Fox Run Regional Park
Black-throated Gray Warbler (Jan Allbright:Richard Bunn) first 9/21
++++Sand Creek
Cassin's Vireo --Dublin Blvd to Woodmen Road (Alan Versaw) first 9/21

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Philadelphia Vireo (Geissler) first 9/22
Ladder-backed Woodpecker (Joel Adams) last 9/22
Ladder-backed Woodpecker --Bell Grove (Dean Shoup) last 9/22
Yellow-bellied Sapsucker (Bez Bezuidenhout) reported 9/22
Northern Mockingbird (Joel Adams) last 9/22
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
(above: banding station unless stated elsewhere, El Paso County)
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)

Jefferson County
++++4400 West Bow Mar Drive, Littleton
Ruby-throated Hummingbird (Tina Jones/Santiago Tabares) (first 9/19) last
Ruby-throated Hummingbird (2nd bird) (Tina Jones) first 9/22
(use chairs in backyard, let Tina know if coming: <tjcalliope...>)
++++Deer Creek area
Eastern Phoebe (2) --Deer Creek at Buckhorn Road (Washburn:Thompson) last
++++South Valley Park
Sage Thrasher (4) (Gwen Moore/Washburn:Thompson) (first 9/12) 1; last 9/22
++++Lair 'O Bear Park
Sage Thrasher (Bruce Cyganowski/Santiago Tabares) (first 9/6) last 9/22
++++Corwina Park
Northern Pygmy-Owl (Reed Gomer) first 9/21
++++Standley Lake
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
++++Horseshoe Lake
Mew Gull --pond north of lake (Nick Komar) (first 9/19) last 9/22
Mexican Duck (Nick Komar) reported 9/22
++++North Poudre Reservoir #3
Sabine's Gull (Nick Komar:David Wade) first 9/22
++++Wellington Wildlife Area, Cobb Lake
Cassin's Vireo (Olson:Bankert/Komar) (first 9/16) last 9/22
Common Tern (3) (Andy Bankert:Nick Komar) first 9/20
Sage Thrasher (Olson:Bankert/Bankert:Komar) (first 9/16) 2; last 9/20
++++Near Rawhide Reservoir
Townsend's Warbler (2) --Oasis/east/Rawhide (Nick Komar) first 9/22
++++Schware Unit, Wellington Wildlife Area
Long-eared Owl (4) (Nick Komar) first 9/22
++++Prospect Ponds Natural Area
Green Heron (Jay Breidt) (first 6/11) 1; 9/22
Barn Owl (Paul Ode) first 9/22
++++Spring Canyon Community Park
Eastern Screech-Owl (Paul Ode) last 9/22
++++Boyd Lake State Park
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
Eastern Screech-Owl (Lori Zabel) first 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

Las Animas County
++++Hwy 350, near Purgatoire River
Rose-breasted Grosbeak --see map (Ruth Stearns) first 9/22

Pueblo County
++++Pueblo Reservoir
Greater Roadrunner --south marina (Joe Chen:Diane Roberts) first 9/22
Lesser Black-backed Gull (2) (Percival/M.OB.) (first 9/13) 1st year; last
Common Tern (6) --south marina (Percival/Diane Roberts) (first 9/19) 3;
last 9/22
Parasitic Jaeger (Percival/Joe Chen:Diane Roberts) (first 9/13) last 9/22
Least Flycatcher --Rock Canyon/below dam/north/river (Doug Kibbe:Elaine
Wagner) first 9/22
Gray Flycatcher --Rock Canyon/below dam/north/river (Doug Kibbe:Elaine
Wagner) first 9/22
Curve-billed Thrasher (M.OB.) last 9/22
Sage Thrasher (2) (M.OB.) last 9/22
Indigo Bunting (Roger Massey) first 9/22
White-throated Sparrow (M.OB.) first 9/22
Long-tailed Jaeger (2) (Percival/Jerry DeBoer) (first 9/13) 1; last 9/21

++++Pueblo City Park
Broad-winged Hawk (Joel Adams) first 9/22

Weld County
++++Crow Valley
Cassin's Kingbird (David Leatherman) first 9/20
++++Baxter Lake
Marbled Godwit (1) (Mlodinow) (first 9/6) 1; last 9/20


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

Otero County
++++Vogel Canyon Recreation Area
Curve-billed Thrasher (2) (Tim Leppek) last 9/22

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


Kit Carson County
++++Fairview Cemetery, Burlington
Broad-winged Hawk (Stevens:Michaels) first 9/22

Logan County
++++North Sterling Reservoir and Area
Black-bellied Plover (Dowell) first 9/22
Sabine's Gull (David Dowell) first 9/22
++++Tamarack Ranch Wildlife Area
Red-bellied Woodpecker (1) (Bez Bezuidenhout) last 9/20
American Redstart (Bezuidenhout) first 9/20

Logan/Sedgwick Counties
++++Jumbo Reservoir
Black-bellied Plover (2) (Dowell) first 9/22
Sabine's Gull (Dowell) first 9/22
Common Tern (Stevens:Michaels/Dowell) (first 9/19) last 9/22
Eastern Bluebird (2) (Dowell) first 9/22

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
Semipalmated Plover (Dean Shoup/Dowell) (first 9/2) 8; last 9/22
Long-billed Curlew (Dowell) first 9/22
Red-necked Phalarope (Kevin DeBoer/Dowell) (first 9/16) last 9/22

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

Sedgwick County
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
Red-bellied Woodpecker (Stevens:Michaels) first 9/20

Yuma County
++++Bonny Reservoir Area
Red-headed Woodpecker (2) --Fosters Grove
(Washburn:Thompson/Stevens:Michaels) last 9/22
Eastern Phoebe --wagon wheel (Dean Shoup/Stevens:Michaels) (first 9/16)
last 9/22
Palm Warbler (Stevens:Michaels) first 9/22
Nashville Warbler (Stevens:Michaels) first 9/22
Northern Cardinal (Stevens:Michaels) last 9/22
Eastern Screech-Owl (Stevens:Michaels) last 9/22
(Bonny Reservoir Wildlife Area)
Blue-headed Vireo (Stevens:Michaels) first 9/22
Mourning Warbler (Stevens:Michaels) first 9/22
Eastern Bluebird (Stevens:Michaels) last 9/22
Gray-cheeked Thrush (Stevens:Michaels) first 9/22
Yellow-billed Cuckoo (Stevens:Michaels) last 9/22
Magnolia Warbler (Stevens:Michaels) first 9/22
Eastern Screech-Owl (Stevens:Michaels) last 9/22
(Hale Ponds)


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

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

Fremont County
++++Arkansas Riverwalk
Black Phoebe --MacKenzie Avenue bridge (Elaine Wagner:Doug Kibbe) last
++++Tunnel Drive area
Rufous-crowned Sparrow (4) (Kibbe:Wagner) last 9/22
++++Rouse Park
Western Screech-Owl (Elaine Wagner) 3; last 9/21

La Plata County
++++Vallecito Reservoir
Sabine's Gull (imm) (Jason St. Pierre) first 9/22

Mesa County
++++Grand Junction Wildlife Area
Sagebrush Sparrow (3) (Mike Henwood) first 9/22
++++Horsethief Canyon Wildlife Area
Gray Flycatcher (Douglas Dekman) last 9/22
++++Little Salt Wash Park
Broad-winged Hawk (adult dark morph) (Brett Walker) reported 9/22

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

Ouray County
++++Ouray and Box Canyon Falls
Cassin's Vireo (2) --Amphitheater Campgrounds (Wright:Dexter) first 9/22
++++Ouray Perimeter Trail
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

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

Summit County
++++Dillon Reservoir
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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