Date: 10/28/17 3:37 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for October 28, 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: 10/27/2017
Adams (Common Loon)
Boulder (Yellow-throated Warbler, Bonaparte's Gull, Harris's Sparrow)
Denver (Red-throated Loon, Common Loon, Surf Scoter)
El Paso (White-throated Sparrow)
Larimer (Greater White-fronted Goose, Lesser Black-backed Gull)
Pueblo (Long-tailed Duck, Common Loon, Red-necked Grebe, Bonaparte's Gull,
Common Tern, Curve-billed Thrasher)
Weld (Bonaparte's Gull)


Adams County
++++Barr Lake
Common Loon (Bart Deferme) first 10/27
Long-eared Owl --below dam (Stevens) last 10/24
Barn Owl (Stevens) last 10/24

Arapahoe County
++++Cherry Creek Reservoir
Surf Scoter (Mary Burger/Stevens) (first 10/22) last 10/25
Common Loon (Richard Stevens) (first 10/16) last 10/24

Arapahoe/Jefferson County
++++South Platte Park Reservoir & Area
Surf Scoter (2) --southwest corner, Jefferson (Bart Deferme) first 10/25

Boulder County
++++County (Tundra Swans NOT found; Stevens:Michaels 10/27: Sombrero Marsh,
Baseline Reservoir, Boulder Reservoir, Valmont Reservoir,
Walden Ponds, Sawhill Ponds, White Ranch Pond, Teller Lakes,
Prince Lake #2, Erie Reservoir, Lagerman Reservoir, Terry Lake)
++++Kittredge Pond
Yellow-throated Warbler (Nick Moore) first 10/27
++++Lagerman Reservoir
Bonaparte's Gull (Stevens:Michaels) first 10/27
++++Twin Lakes Open Space
Harris's Sparrow (Leslie S) first 10/27
++++Sombrero Marsh
Tundra Swan (6) (Mike Hensley) first 10/26 NOT 10/27
++++Boulder Reservoir
Common Loon (David Dowell) first 10/25
Greater Scaup (2) (Luke Pheneger) first 10/24
Surf Scoter (Pheneger) first 10/24

Denver County
++++Marston Reservoir
Red-throated Loon (Doug Kibbe/Loch Kilpatrick) (first 10/23) last 10/27
Common Loon (4) (Kibbe/Kilpatrick) (first 10/23) 2; last 10/27
Surf Scoter (adult male) (Glenn Walbek) first 10/27

Douglas County
++++Castlewood Canyon Road
Western Bluebird (2) --south of State Park (Stevens) last 10/26

El Paso County
++++Red Rock Canyon Open Space
White-throated Sparrow (Jim Merritt) first 10/27
++++Cheyenne Mountain Zoo
Common Poorwill (late) (Heidi Eaton) first 10/26

Jefferson County
++++Wheat Ridge Greenbelt
Surf Scoter --Tabor Lake (Andy Knolla/Terry Michaels) (first 10/17) last
++++Reynolds Park
American Three-toed Woodpecker (Stevens & all) last 10/23
(north of interserction of Oxen Draw, Raven's Roost & Eagle's View trails)
Dusky Grouse (2) (Stevens) (first 3/17) 1; last 10/23
(Above unless stated: Eagle's View Trail, south of old service road)
Northern Pygmy-Owl --Songbird trail (Stevens & all) last 10/23

Jefferson/Douglas County
++++Chatfield Reservoir area
White-faced Ibis (Peter Pereira/Pam Zimmer) (first 10/25) last 10/26
Greater White-fronted Goose (Doug Kibbe) first 10/24
Bonaparte's Gull (Dale Pate) first 10/24

Larimer County
++++Lake Loveland
Greater White-fronted Goose (Norm Lewis) first 10/27
Lesser Black-backed Gull (Christine Sparks/Norm Lewis) (first 10/14) 1;
last 10/27
++++Tri-Lakes Area
Pacific Loon (McCloy/David Wade) (first 10/24) last 10/25
Common Loon (Nick Komar/Michael McCloy) (first 10/14) 2; last 10/24
++++Douglas Reservoir
Pacific Loon (David Wade) first 10/25
Common Loon (Wade) first 10/25
American Redstart (David Wade) reported 10/25
++++Arapahoe Bend Natural Area
Black-bellied Plover (Amy Davis/Lori Zabel) (first 10/8) last 10/25
++++Larimer County Landfill
Bonaparte's Gull (Joshua Smith) first 10/25
(Restricted access, see directions; closed on Sundays, no view from
outside of property)
++++Grandview Cemetery
Eastern Screech-Owl (David Wade) last 10/25
++++Grey Rock Trail
Harris's Sparrow (2) (Doug Swartz) reported 10/24

Pueblo County
++++Pueblo Reservoir
Long-tailed Duck (Percival) first 10/27
Common Loon (5) (Percival) 2+, last 10/27
Red-necked Grebe (Percival) (first 10/25) last 10/27
Bonaparte's Gull (3) (Percival) (first 10/24) 5; last 10/27
Common Tern (Percival) last 10/27
Curve-billed Thrasher (Percival) last 10/27
Sabine's Gull (2 juvenile) (Percival) (first 10/9) 1; last 10/25
Surf Scoter (8) (Brandon Percival) first 10/24
++++Lake Minnequa
Swamp Sparrow (Van Truan) (first 10/9) last 10/25
++++Lake Beckwith
Surf Scoter (3) (Dave Silverman) first 10/24

Weld County
++++Union Reservoir
Bonaparte's Gull (3) (Mlodinow:Pheneger/Sue Riffe) (first 10/17) 1; last


Otero County
++++Lake Holbrook
Bonaparte's Gull (2) (Stan Oswald) first 10/25


Yuma County
++++Bonny Reservoir Area
Red-bellied Woodpecker --Wagon Wheel Campgrounds (Norm Lewis) last 10/25
Sprague's Pipit --Pipit Hill (Richard Stevens/Norm Lewis) (first 9/21) 1;
last 10/25
Eastern Screech-Owl --Hale Ponds (Washburn) last 10/19
Eastern Screech-Owl (2) --Republican River/east/hwy 385 (Washburn) last
Long-eared Owl --foster's grove (Washburn) last 10/19


Clear Creek County
++++Guanella Pass
White-tailed Ptarmigan (6) (Stevens & all) last 10/21

La Plata County
++++Vallecito Reservoir
White-throated Sparrow (Jason St. Pierre) first 10/26

Mesa County
++++Highline Lake State Park
Common Loon (adult, 1st year) (Henwood:Raker/Denise & Mark Vollmar)
(first 10/16) 2; last 10/25
++++Grand Junction Wildlife Area
Western Screech-Owl (Carol Ortenzio) last 10/24
White-throated Sparrow (Carol Ortenzio) last 10/24

Montezuma County
++++McPhee Reservoir
White-winged Scoter (Dexter:Wright) first 10/24
Surf Scoter (Dexter:Wright) first 10/23
Common Loon (2) (Dexter:Wright) first 10/23

Ouray County
++++Orvis Hot Springs
White-winged Crossbill (2) (Ira Sanders) reported 10/24

Park County
++++Eleven Mile Reservoir
Common Loon (M.OB.) first 10/23
++++Wade Elk Lodge
Brown-capped Rosy Finch (3) (Alec Oliver) (first 10/21) 2; last 10/23

Routt County
++++Lake Catamount
Greater Scaup (JoAnn Riggle/Tresa Moulton) (first 10/22) 2; last 10/24
Barrow's Goldeneye (JoAnn Riggle/Tresa Moulton) (first 10/22) 2; last

San Miguel County
++++Miramonte Reservoir
Surf Scoter (15) (Eric Hynes/Dexter:Wright) (first 10/22) 3+, last 10/23
White-winged Scoter (5) (Dexter:Wright) first 10/23

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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