Date: 9/14/18 5:47 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for September 14, 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: 9/13/2018
Adams (Cassin's Vireo, Marbled Godwit, Pectoral Sandpiper, Red-necked
Phalarope, Lesser Black-backed Gull)
Boulder (Least Flycatcher)
Denver (Green Heron, Sabine's Gull)
Eagle (Common Loon)
El Paso (Olive-sided Flycatcher)
Jefferson/Douglas (Parasitic Jaeger, Long-tailed Jaeger, Sabine's Gull,
Caspian Tern, Ovenbird)
Larimer (Caspian Tern, Townsend's Warbler, Sage Thrasher, White-tailed
Ptarmigan, American Three-toed Woodpecker, Brown-capped Rosy Finch)
Logan/Sedgwick (Pectoral Sandpiper)
Logan/Washington (Little Gull, Black-bellied Plover, Red-necked Phalarope,
Willet, Common Tern)
Otero (Semipalmated Plover)
Ouray (Black Swift, Pinyon Jay)
Pueblo (Long-tailed Jaeger, Lesser Black-backed Gull)
Routt (Palm Warbler)
Weld (Marbled Godwit)


Adams County
++++Barr Lake
Cassin's Vireo (Nathan Senner/McBurney) (first 9/12) last 9/13
Marbled Godwit (3) (Cameron Carver/David Dowell) (first 9/9) last 9/13
Pectoral Sandpiper (2) (Cynthia Madsen/Dowell) (first 9/8) 5; last 9/13
Red-necked Phalarope (28) (Dowell) first 9/13
Lesser Black-backed Gull (Dowell) first 9/13
Townsend's Warbler (McBurney) last 9/12
++++Rocky Mountain Arsenal
Sage Thrasher --bison enclosure/southeast entrance (Stevens:Kosten) last

Boulder County
++++Mesa South Trail Map
Least Flycatcher (Peter Burke) first 9/13
++++Niwot Area and Gunbarrel Hill Map
Burrowing Owl (2) --Gunbarrel Hill (Chris Brown/David Waltman) (first
4/14) 1; last 9/12
Black-and-white Warbler (Jack Bushong) first 9/12
(Coal Creek, several hundred yards west of Community Park)

Denver County
++++Bluff Lake Nature Area
Green Heron (George Ho/Rebecca Laroche) (first 6/21) last 9/13
Sabine's Gull (M.OB.) first 9/13
Northern Mockingbird (Rebecca Laroche) first 9/12

El Paso County
++++Red Rock Canyon Open Space Map
Olive-sided Flycatcher (Jim Merritt) first 9/13
++++Hanover Road and area
Burrowing Owl (4) (Debbie Segal/Kevin Ash) (first 7/23) last 9/12

El Paso/Pueblo Counties County
++++Chico Basin Ranch (fee area)
Red-headed Woodpecker (2) (Kevin Ash) 2; last 9/12
Ladder-backed Woodpecker (Ketcham) 3; last 9/12
Olive-sided Flycatcher (Ketcham) last 9/12
Great Crested Flycatcher (Jim Merritt/Kevin Ash) (first 9/8) last 9/12
Cassin's Vireo (2) (Kim Geissler/Ash) (first 9/8) last 9/12
Curve-billed Thrasher (Kevin Ash) 2; last 9/12
Sage Thrasher (Ash) 2; last 9/12
American Redstart (Drummond/Asj) (first 9/10) last 9/12
Northern Waterthrush (Kim Keisler/Ash) (first 9/1) last 9/12
(above: banding station unless stated elsewhere, El Paso County)
Sage Thrasher (Kevin Ash) first 9/12
American Redstart (Kevin Ash) first 9/12
Ladder-backed Woodpecker (Terence Berger) last 9/12
(all above: Headquarters, Pueblo County)

Jefferson County
++++South Valley Park
Sage Thrasher (4) (Gwen Moore) first 9/12
Palm Warbler (Suddjian/Moore) (first reported 9/10) again 9/12
(View Trail at Wild Plum)
++++Wheat Ridge Greenbelt
Black Phoebe (Tuesday birders) reported 9/11
++++Welchester Tree Park
Red-eyed Vireo (James McCall) last 9/11

Jefferson/Douglas County
++++Chatfield Reservoir
Parasitic Jaeger (1) (Myron Gerhard/Terry Michaels) (first 9/8) last 9/13
Long-tailed Jaeger (2) (Myron Gerhard/Terry Michaels) (first 9/8) last
Sabine's Gull (Joey Kellner/Terry Michaels) (first 9/8) last 9/13
Caspian Tern (up to 2) (Diane Roberts) first 9/13
Ovenbird --below dam (Gabriel Wiltse) first 9/13
Northern Waterthrush --Audubon Center trails (Dylan Cooper) first 9/12
Great Black-backed Gull (3rd cycle) (Glenn Walbek/Dean Shoup) (first 9/8)
again 9/11
Common Tern (Erthal/Frank Farrell) (first 9/10) last 9/11

Las Animas County
++++Lake Dorothey Wildlife Area
Lewis's Woodpecker (3) (Tony Godfrey) (first 7/21) 1; last 9/10

Larimer County
++++Timnath Reservoir
Caspian Tern (2) (Bruening/Joe Mammoser) (first 9/4) 2; last 9/13
Lesser Black-backed Gull (Steve Mlodinow:Shawn Mason) first 9/11
Burrowing Owl (2) (Greg Goodrich:Anna Troth) last 9/11
++++Matthew Reeser Bird Sanctuary at Estes Park Map
Townsend's Warbler (Sue Riffe) first 9/13
++++Tri Lakes
Sage Thrasher (Joshua Smith) first 9/13
++++Prospect Ponds Natural Area Map
Green Heron (Jay Breidt) (first 6/11) 1; 9/12
++++Horsetooth Mountain Park Map
Cassin's Vireo (Arvind Panjabi) first 9/12
++++Rocky Mountain National Park Map
White-tailed Ptarmigan (1) --Medicine Bow Curve (Bendorf/Sue Riffe)
(first 5/30) last 9/13
American Three-toed Woodpecker (2) --Hidden Valley Creek (Sue Riffe) last
Brown-capped Rosy Finch (39) --Alpine Visitor's Center (Sue Riffe) first
Dusky Grouse --Upper Beaver Meadows (Stephine Lacey) first 9/12
Williamson's Sapsucker --Upper Beaver Meadows (Lacy) last 9/12
++++North Shields Pond Natural Area
Green Heron (David Wade) first 9/11
++++Grandview Cemetery
Olive-sided Flycatcher --section S (David Leatherman) first 9/11

Pueblo County
++++Pueblo Reservoir Map
Long-tailed Jaeger (Brandon Percival) first 9/13
Lesser Black-backed Gull (2) (Percival) first 9/13

Weld County
++++Baxter Lake Map
Marbled Godwit (1) (Mlodinow) (first 9/6) last 9/13
++++Banner Lakes Wildlife Area
American Redstart (Dowell/Stevens) (first 9/3) last 9/11
++++Eaton Cemetery
Olive-sided Flycatcher (Mlodinow) first 9/11


Kiowa County
++++County Road 72 & CR J
Mountain Plover (10) (Leukering) first 9/10

Otero County
++++Lake Holbrook Map
Semipalmated Plover (2) (Shoup/Adams Vesely) (first 8/25) 1; last 9/13


Logan/Sedgwick Counties
++++Jumbo Reservoir Map
Pectoral Sandpiper (15) (Bill Kaempfer) first 9/13

Logan/Washington Counties
++++Prewitt Reservoir area Map
Little Gull (juv) (Bill Kaempfer) first 9/13
Black-bellied Plover (Norm Lewis/Kaempfer) (first 8/25) 1; last 9/13
Red-necked Phalarope (2) (Doug Faulkner/Kaempfer) (first 8/21) 21; last
Willet (Kaempfer) first 9/13
Common Tern (Bob Spencer/Kaempfer) (first 9/1) 5; last 9/13
Semipalmated Plover (8) (Cynthia Madsen:David Hill) last 9/12
Whimbrel (Cynthia Madsen:David Hill) first 9/12
Marbled Godwit (35) (Moning:Wittmann/Madsen:Hill) (first 8/5) 1; last 9/12
Pectoral Sandpiper (3) (Chernack/Madsen:Hill) (first 9/6) 1; last 9/12

Morgan County
++++Jackson Reservoir & area
Marbled Godwit (Mlodinow) last 9/10
Lesser Black-backed Gull (Kathy Mihm-Dunning/Mlodinow) (first 8/31) last
Alder Flycatcher (Mlodinow) reported 9/10
Gray Flycatcher (Mlodinow) first 9/10
Caspian Tern (Leukering/Mlodinow) (first 9/3) last 9/10
Baltimore Oriole --canal parking lot (Lewis:Routh/Mlodinow) (first 9/8)
last 9/10


Alamosa County
++++Great Sand Dunes National Monument
Pinyon Jay (45) --Visitor's Center (Joe Hanfman) last 9/11

Archuleta County
++++Pagosa Springs & area
Lewis's Woodpecker (1) --North 5th & Loma (Byron Greco) last 9/11

Chaffee County
++++Ice Lake Map
Lewis's Woodpecker (Chris Brobin/Christian Hagenlocher) (first 6/2) last
Pinyon Jay (60) (Hagenlocher) last 9/12
(private, must view from road with scope)

Eagle County
++++Piney Lake
Common Loon (Deanna MacPhail) first 9/13

Jackson County
++++Arapaho National Wildlife Refuge & Area
Semipalmated Plover --auto tour (Nick Komar/Charles Hundertmark) (first
9/3) 3; last 9/11
Pectoral Sandpiper (15) (David Dowell/Hundertmark) (first 7/21) last 9/11

La Plata County
++++Animas River Trail
Black Phoebe --Rivergate area (Dan Pittenger) last 9/12
Nashville Warbler --east 32nd street (Jason St. Pierre) first 9/11
++++Huck Finn Pond area & Animas River Trail
Lewis's Woodpecker --E. 4th Avenue (Kelsey Reeder) first 9/11

Mesa County
++++Grand Junction Wildlife Area
Cassin's Vireo (Denise & Mark Vollmar) first 9/11
Black Phoebe (Ryan Claar/Mike Henwood:Kathleen McGinley) (first 8/22)
last 9/10
Townsend's Warbler (Henwood:McGinley) first 9/10

Moffat County
++++Loudy Simpson Nature Trail Map
Nashville Warbler (David Suddjian) last 9/12

Montrose County
++++Nucla Town Reservoir
Black Phoebe (2) (Coen Dexter:Brenda Wright) (first 4/16) 1; last 9/12

Ouray County
++++Ouray and Box Canyon Falls Map
Black Swift (30) --Ouray (Joe Hanfman) last 9/13
Black Swift (up to 7) (Niler Pyeatt/Joe Hanfman) (first 5/31) 1; last 9/12
Townsend's Warbler (Joe Hanfman) first 9/12
++++Ridgway State Park
Pinyon Jay (50) (Adam Cupito) last 9/13

Rio Grande County
++++Home Lake Wildlife Area
Black Swift (John Rawinski) (first 8/31) 20 flyover; again 9/11

Routt County
++++Yampa River Botanic Park
Summer Tanager (David Suddjian) first 9/11
++++Stagecoach Recreational Area
Barrow's Goldeneye (1) (David Suddjian) first 9/11
Mew Gull (1) (David Suddjian) first 9/11
++++Yampa River near CR 70
Lark Bunting (David Suddjian) first 9/11

San Miguel
++++Telluride area
Palm Warbler --boomerang to river trails (Eric Hynes) first 9/13

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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