Date: 7/6/18 3:09 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for June 6, 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: 7/5/2018
Boulder (Williamson's Sapsucker, Black Swift, Caspian Tern, Red-eyed Vireo,
Dickcissel, American Three-toed Woodpecker, Indigo Bunting)
Clear Creek (White-tailed Ptarmigan)
Douglas (American Redstart)
Eagle (Pinyon Jay)
El Paso (Ovenbird, Indigo Bunting, Ash-throated Flycatcher, Burrowing Owl,
Curve-billed Thrasher, Cassin's Sparrow)
La Plata (Lewis's Woodpecker)
Larimer (Common Gallinule, Green Heron, Brown-capped Rosy Finch, American
Three-toed Woodpecker, Dickcissel, Indigo Bunting)
Mesa (Gray Flycatcher, Gray Vireo, Pinyon Jay, Black-throated Sparrow,
Sagebrush Sparrow)
Montrose (Black Phoebe, Black-throated Gray Warbler)
Ouray (Black Swift)


Adams County
++++Rocky Mountain Arsenal
Sage Thrasher --wildlife drive (Dave King/Candice Johnson) (first 7/2) 2;
last 7/4
Northern Mockingbird --see (King/Sandra Blair) (first 7/2) last 7/3
Red-headed Woodpecker --0.1 miles/west/Potomac canal (Dave King) first 7/2
Burrowing Owl
--Rattlesnake Hill parking lot (Dave King) first 7/2
--wildlife drive, 0.2 miles/north/mile marker 9.0 (Stevens:Kosten/King)
(first 6/23) last 7/2

Arapahoe County
++++Richmil Ranch Open Space & Area
Northern Mockingbird (4) (Stevens/Dave King) (first 6/1) 4; last 7/1
Cassin's Kingbird (6) (Suddjian/Dave King) (first 5/28) 2; last 7/1
++++Gun Club Road area
Burrowing Owl --0.4 miles/south/Colfax & Toll Road (1) (Stevens/Dave
King) (first 5/3) 4; last 7/1

Boulder County
++++Magnolia Road
Williamson's Sapsucker (2) (Sue Riffe) first 7/5
Black Swift (Sue Riffe) first 7/5
++++Lagerman Reservoir
Caspian Tern (John Rutenbeck/John Rutenbeck:David Ely) (first 6/29) last
Willet (Leslie S/Jack Bushong) (first 7/3) last 7/4
++++Golden Ponds
Red-eyed Vireo (David Dowell) (first 5/14) last 7/5
Dickcissel (2) (David Dowell) first 7/5
Green Heron (Carl Bendorf/Carl Starace) (first 5/21) last 6/29
Eastern Phoebe (Pheneger) (first 6/25) last 6/29
++++North Boulder: Neva Road & Nelson Road/75th Street
Red-eyed Vireo (Richard Trinkner) first 7/5
Dickcissel (5) (Todd Deininger) first 7/1
++++Dodd Reservoir
Caspian Tern --flew toward Lagerman Reservoir (David Haskell:Katie
Lehman) first 7/5
++++Lion Lakes Trail
American Three-toed Woodpecker (2) (Kathy Mihm-Dunning) first 7/5
++++Heil Ranch Open Space & area
Indigo Bunting (Chris Brown) first 7/5
Lewis's Woodpecker --straightaway (Luke Pheneger/Mlodinow) (first 5/30)
last 7/4
++++Mesa South Trail
American Redstart (Ted Floyd) first 7/4
Indigo Bunting (Jon Webb) last 7/4
Chestnut-sided Warbler --southeast of parking lot (Dan Zmolek/Jon Webb)
(first 6/16) last 7/4
Lewis's Woodpecker (Betty Glass) first 7/2
++++McCall Lake area
Dickcissel (Sue Riffe) first 7/4
Bobolink (David Waltman/Sue Riffe) (first 5/11) last 7/4
++++Gregory Canyon
Ovenbird (David Waltman/Chris Brown) (first 5/31) last 7/3
++++Chautauqua Park
Northern Mockingbird (Chris Brown) first 7/3
Northern Pygmy-Owl (John Malenich) first 7/1
++++Old St. Vrain Road & Area
Dickcissel (Sue Riffe) first 7/3
Cordilleran Flycatcher (3) (Rolf Herenstein) first 7/1
++++Walden Ponds, Sawhill Ponds & Boulder Creek
Little Blue Heron (immature) (Joel Such/Luke & Tracy Pheneger) (first
6/11) last 7/2
(Above: Cottonwood Marsh)
Eastern Screech-Owl (Ted Floyd) last 7/1
++++Nelson Road & 75th Street
Dickcissel (5) (Todd Deininger) first 7/1
++++Niwot Area and Gunbarrel Hill
Burrowing Owl (2) (Chris Brown/Dan Zmolek:Leslie S) (first 4/14) 4; last

Denver County
++++Bluff Lake Nature Area
Green Heron (George Ho/Steve Herbert) (first 6/21) last 7/4

Douglas County
++++Roxborough State Park
American Redstart (female) (Chris Gilbert) first 7/5
++++Castlewood Canyon Road
Ovenbird --Creekside Trail (Richard Stevens/Karen Metz) (first 5/11) 2;
last 7/2
Indigo Bunting (Chris Gilbert/Karen Metz) (first 5/28) last 7/2

El Paso County
++++Cheyenne Mountain Park
Ovenbird (up to 3) (Ken Burton/Tanja Britton) (first 5/6) 1; last 7/5
Indigo Bunting (Tanja Britton) (first 6/20) last 7/5
Ash-throated Flycatcher (Roger Mssey/Britton) (first 6/3) last 7/5
++++Squirrel Creek Road Area
Burrowing Owl (3) --Peyton Hwy/south/Hwy 96 (Tyler & Robert Ficker) first
Cassin's Sparrow (Cathy Bondy) last 7/1

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Curve-billed Thrasher (Robert & Tyler Ficker) last 7/5
Cassin's Sparrow (2) (Robert & Tyler Ficker) 5; last 7/5

Huerfano County
++++Santa Clara Creek (CR 310)
Hepatic Tanager (Diane Roberts:David Suddjian/Roger Massey) (first 6/12)
2; last 6/30

Jefferson County
++++Plainview Road, Coal Creek Open Space
Dickcissel (Eric Defonso/Cameron Carver) (first 6/9) 1; last 7/4
(east of Plainview Road, mile from highway 72)
Sage Thrasher (David Chenack) first 7/2
Grasshopper Sparrow (Kaempfer/Bushong) (first 6/16) 3; last 7/2
++++Lair 'O Bear Park
Red-eyed Vireo (Anna Lenshek) first 7/4
++++Staunton State Park
Williamson's Sapsucker (3) (Ben Sampson/Santiago Tabares) (first 4/22)
last 7/4
Least Flycatcher --see map (Christine Alexander/Karen Drozda) (first
6/30) last 7/4
++++Wheat Ridge Greenbelt (Prospect Park)
Ovenbird (Shannon Cwik) first 7/3
++++Standley Lake
Northern Mockingbird (David Chernack/Gabriel Wiltse) (first 6/4) last 7/2

Jefferson/Douglas Counties County
++++Chatfield Reservoir
Least Flycatcher --Audubon Center trails (5) Luke Pheneger) last 7/4
Eastern Phoebe (2) --Denver Botanic Gardens (fee area) (Gerhard/Janet
Shin:Mary O'Connor) (first 5/17) 2; last 7/3
American Redstart --Audubon Center trails (Diane Roberts/Frederick
Townsend) (first 5/13) last 7/2
Least Flycatcher (12) --upstream/Kingfisher Bridge (Dave King) 5; last 7/2
American Redstart --upstream/Kingfisher Bridge (Mackenzie Goldthwait/Dave
King) (first 5/19) last 7/2

Larimer County
++++Running Deer Natural Area/Cottonwood Hollow Natural Area
Common Gallinule (Robert Beauchamp/Todd Deininger) (first 7/1) last 7/5
(approximately 40 yards south of the empty nest pole and to the west of
the pole)
Green Heron (Lori Zabel/David Tonnessen) (first 5/8) last 7/5
++++Rocky Mountain National Park
Brown-capped Rosy Finch (2) --Lava Cliffs (Amy Boggan/Andrea Tolzmann)
(first 6/10) 3; last 7/5
American Three-toed Woodpecker (1) --Alluvial Fan area (Oscar Wilhelmy)
first 7/5
++++Reservoir Ridge Natural Area
Dickcissel --near red tank (Michelle McKim/Kevin Keirn) (first 6/13) 2;
last 7/5
++++CSU Environmental Learning Center to Cattail Chorus
Indigo Bunting (Kevin Keirn) last 7/5
++++Soapstone Prairie Natural Area
Baird's Sparrow (Andy Bankert/Caroline Olson) (first 5/16) last 7/4
++++Riverbend Ponds Natural Area & Poudre River Trail
Green Heron (Sue Emond/Gwen Moore) (first 5/22) 5; last 7/4
++++Kechter Road Ponds
Caspian Tern (2) (Doyle:Wade/Riley Morris) (first 6/17) 4; last 7/4
++++County Road 5 near Rawhide Reservoir
Burrowing Owl --CR 5/north of Buckeye Road (Doyle/Caroline Olson) (first
4/27) 2; last 7/4
Northern Mockingbird (2) (Caroline Olson) 2; last 7/4
Cassin's Sparrow (5) (Caroline Olson) last 7/4
++++Mariana Butte Natural Area
Yellow-billed Cuckoo --Hidden Hogback trail (Cheri Orvig) first 7/3

Weld County
++++Pawnee National Grasslands area
Mountain Plover (5) --CR 89/north/hwy 14 (Matthew Crawford/Sue Riffe)
(first 6/23) 4; last 7/4
Least Flycatcher (2) --playa at CR 77 & CR 116 (Sue Riffe) first 7/4
Chestnut-collared Longspur (11) --CR 49/north/CR 114 (Sue Riffe) first 7/4
Cassin's Sparrow (2) --CR 77 & CR 116 (Sue Riffe) first 7/4


Bent County
++++Fort Lyons Wildlife Easement Area & Wildlife Area
Barn Owl (2) --see (Mlodinow) first 7/1
Short-eared Owl --see (Mlodinow) first 7/1
Western Screech-Owl (Mlodinow) first 7/1
Black Rail
--CR 16/south/CR HH (A.N./Mlodinow) (first 5/3) 2; last 7/1
--CR HH/east/CR 13 (Alexander:Casias/Mlodinow) (first 5/5) 3; last 7/1

Prowers County
Baltimore Oriole --S. 13th Street/W. Parkway Drive (Dorothy Russell)
(first 6/24) last 7/2


Logan County
++++Tamarack Ranch Wildlife Area
Upland Sandpiper --east road (David Dowell) first 7/4
Yellow-billed Cuckoo (up to 11) --west/CR 55 (Stevens:Michaels/Linda Lee)
(first 5/18) 1; last 7/4
Red-bellied Woodpecker (David Dowell) 3; last 7/4
Eastern Wood-Pewee (Alexander/Dowell) (reported 6/9) again 7/4
Baltimore Oriole (Dowell) last 7/4
Great Crested Flycatcher (Eric DeFonso/Farrell:Chavez) (first 5/25) last
Field Sparrow (up to 9) (Farrell:Chavez) 2; last 7/1
Northern Cardinal (Farrell:Chavez) 2; last 7/1
++++Duck Creek Wildlife Area
Upland Sandpiper (Stevens:Michaels/Mark Chavez) (first 5/18) 2; last 7/1

Logan/Washington Counties
++++Prewitt Reservoir area
Marbled Godwit (Dowell) first 7/4


Archuleta County
++++Pinon Lake Reservoir
Lewis's Woodpecker (2) (Ben Bailey/Justin Bosler) (first 6/4) 2; last 7/3
NOTE: TRUMPETER SWAN on Pinon Lake Reservoir is considered a
tame/released bird)

Chaffee County
++++Chaffee County
Lewis's Woodpecker (2) --waters & james street (Tammy & David McQuade) 5;
last 7/3
Pinyon Jay (6) --kodiak court (David & Tammy McQuade) last 7/3

Clear Creek County
++++Mt. Evans Road
Black Swift (Susan Broderick/Andrew Fontenot) (first 7/3) last 7/4
Barrow's Goldeneye --Echo Lake (Nathan Senner/Patrick Del Pizzo) (first
5/2) last 7/4
Brown-capped Rosy Finch (3) --Summit Lake & south (Stevens:Michaels/David
Suddjian) (first 5/30) 2; last 7/2
American Three-toed Woodpecker --Echo Lake Campgrounds
(Stevens:Michaels/Jeremiah Trimble) (first 5/30) last 7/1
Brown-capped Rosy Finch --top (David Haskell/Jeremiah Trimble) (first
6/14) last 7/1
White-tailed Ptarmigan (2) --east/Summit Lake parking lot
(Stevens:Michaels/Dave Ki
++++Guanella Pass
American Three-toed Woodpecker --Campgrounds (Ben Sampson) last 7/4
White-tailed Ptarmigan --Square Top Trail (Forrest Rowland) first 6/28

Clear Creek/Summit Counties
++++Loveland Pass
White-tailed Ptarmigan (2) --west side/summit (Donald Kautz) last 7/5

Eagle County
++++Dotsero Ponds
Pinyon Jay (10) (JoAnn Riggle) last 7/5

Fremont County
++++Arkansas Riverwalk
Black Phoebe --Sells Pond to Raynolds Avenue (Rich Miller/Olin) (first
3/28) last 7/2
Eastern Phoebe --Sells Pond to Raynolds Avenue (Catherine Olin) 2; last

Garfield County
++++Hanging Lake
Black Swift (2) (Josh King/Washburn:Thompson) (first 6/11) last 6/30
++++White Owl Lake
Boreal Owl (2 heard) (Washburn:Thompson) last 6/29-30

Grand County
++++Grand Lake
American Three-toed Woodpecker --Green Mountain trail (Shelley
Funai/Marcus Roening) (first 6/17) 8; last 7/2
++++Lake Granby
Glossy Ibis (2) --(intersection of Hwy 34 & CR 422) (Alison Field)
reported 7/1

Gunnison County
++++Gunnison County Roads
Gunnison Sage-Grouse (3) --CR 38/north of CR 38A (Jacob Washburn:Jamie
Thompson/Stevens:Michaels) (first 6/25) last 7/1
Sagebrush Sparrow (Gaylee & Richard Dean/Stevens:Michaels) (first 6/30)
last 7/1

Jackson County
Greater Sage-Grouse (see website)

La Plata County
++++West 5th Avenue/11th Street, Durango
Lewis's Woodpecker (Aaron Keller) first 7/5
++++Wildcat Canyon (Rafter J)
Lewis's Woodpecker (Pablo Quezada/Kathy Bearden) (first 6/10) 2; last 7/3
Acorn Woodpecker (1) (Kathy Bearden) last 7/3

Mesa County
++++Colorado National Monument
Gray Flycatcher --last: Devil's Kitchen (CoBus group/Christine Alexander)
(first 5/1) last 7/5
Gray Vireo --Devil's Kitchen trail (Mike Henwood/Alexander) (first 4/19)
last 7/5
Pinyon Jay (2) --Devil's Kitchen (Alexander) last 7/5
Black-throated Sparrow --Devil's Kitchen (Alexander) last 7/5
Sagebrush Sparrow (1) --Devil's Kitchen (Alexander) first 7/5
++++Grand Mesa (Hwy 65)
Purple Martin --Hwy 65/CR 100 (Denise & Mark Vollmar/Washburn:Thompson)
(first 6/30) last 7/3
Boreal Owl --Visitor's Center (CoBus group/Washburn:Thompson) (first
3/31) last 7/3
Boreal Owl --Spruce Grove Campgrounds (CoBus group/Washburn:Thompson)
(first 3/31) last 7/3
++++Cameo/Coal Canyon
Chukar (1) (Stevens:Michaels/Washburn:Thompson) (first 2/28) 2; last 7/2
Sagebrush Sparrow (Riffe/Washburn:Thompson) (first 4/26) last 7/2
++++Me 3/4 Road & Area
Dickcissel --0.15 miles/west/57 road (Jim Liewer:Peter Robinson/Jacob
Washburn:Jamie Thompson) (first 6/24) last 7/1
Bobolink (2) --0.2 miles/west/57 Road (Jim Liewer/Jacob Washburn:Jamie
Thompson) (first 5/28) 1; last 7/1
Bobolink (1) --Oe & 57 Roads (Rick Harner) first 7/1
++++Horsethief Canyon Wildlife Area
Black Phoebe (2) (David Price) (first 3/31) last 7/1

Montrose County
++++Nucla Town Reservoir
Black Phoebe (2) (Coen Dexter:Brenda Wright) (first 4/16) 2; last 7/5
Black-throated Gray Warbler (Dexter:Wright) (first 5/29) last 7/5
++++Nucla Sewer Ponds
Lesser Nighthawk (Dexter:Wright) (first 6/9) last 7/4
Gray Flycatcher --Lower Nucla-Delta Road (Dexter:Wright) (first 6/6) last

Ouray County
++++Ouray and Box Canyon Falls
Black Swift (up to 6) (Niler Pyeatt/Amy Gorospe) (first 5/31) 3; last 7/5

Teller County
++++Mueller State Park
Williamson's Sapsucker (Announcing Reeves) last 7/4

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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