Date: 10/31/17 3:24 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for October 31, 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: 10/30/2017
Adams (Common Loon, Long-eared Owl)
Arapahoe (Common Loon, Bonaparte's Gull)
Boulder (Ross's Goose)
Eagle (Barrow's Goldeneye)
Jefferson (Winter Wren)
Mesa (Bonaparte's Gull)
Montrose (Pinyon Jay)
Pueblo (Curve-billed Thrasher)
Routt (Surf Scoter, Greater Scaup, Barrow's Goldeneye)


Adams County
++++McKay Lake
Common Loon (Matt Hofeditz) first 10/30
++++Barr Lake
Long-eared Owl --east side (Bezuidenhout) last 10/30
Winter Wren --mile 8.6 (Richard Stevens) first 10/29 Stevens:NOT 10/30
++++McKay and 100th Avenue Ponds
Surf Scoter (3) --just north of water treatment plant (Adam Vesely) first

Arapahoe County
++++Cherry Creek Reservoir
Common Loon (Richard Stevens) (first 10/16) last 10/30
Bonaparte's Gull (Michaels/Stevens) (first 10/19) last 10/30
Surf Scoter (Mary Burger/Luke Pheneger) (first 10/22) last 10/29
Lesser Black-backed Gull (Pheneger) last 10/29
Harris's Sparrow (Pheneger) first 10/29
++++Aurora Reservoir Area
Bonaparte's Gull (Stevens:Kosten) first 10/28

Boulder County
++++McIntosh Lake
Ross's Goose (Todd Deininger) first 10/30
++++Kittredge Pond
Yellow-throated Warbler (Nick Moore/Christian Nunes:Peter Burke) (first
10/27) last 10/29
(Latest: back at Oak Trees at northeast corner of eastern pond)
(pines between the Fiske Planetarium and the Speech Language Hearing
Services building)
++++Boulder Reservoir
Common Loon (David Dowell/Luke Pheneger) (first 10/25) last 10/29
Bonaparte's Gull (Pheneger) first 10/29
++++Coal Creek, Louisville
Harris's Sparrow (Jack Bushong) first 10/29
++++Walden Ponds
Swamp Sparrow (Steve Frye/Pheneger) (first 10/21) last 10/28
++++Twin Lakes Open Space
Harris's Sparrow (Leslie S) (first 10/27) last 10/28
++++Valmont Reservoir
Loon species (6) (Jeff Parks) first 10/28

Denver County
++++Marston Reservoir
Red-throated Loon (Doug Kibbe/Stevens:Kosten) (first 10/23) last 10/28
Common Loon (4) (Kibbe/Stevens:Kosten) (first 10/23) 2; last 10/28
Surf Scoter (Glenn Walbek) first 10/27

El Paso County
++++Ramah Wildlife Area
Bonaparte's Gull (David Tonnessen) first 10/29
Snow Bunting (female) --gravel road (Diane Roberts) reported 10/29
Eastern Bluebird (10) (Diane Roberts) first 10/29
++++Aiken Canyon Preserve
Lewis's Woodpecker (David Tonnessen) first 10/28
++++Fountain Creek Regional Park
White-throated Sparrow (John Bruder) first 10/28
++++Cheyenne Mountain Zoo
Common Poorwill (late) (Heidi Eaton/Aaron Driscoll) (first 10/26) last

Jefferson County
++++Robert A. Easton Regional Park
Winter Wren (Dale Pate) first 10/30

Jefferson/Douglas County
++++Chatfield Reservoir area
Common Loon (Steven Snyder) first 10/28
Townsend's Warbler (Celia Greenman) first 10/28

Larimer County
++++Arapahoe Bend Natural Area
Black-bellied Plover (Amy Davis/Robert Beauchamp) (first 10/8) last 10/29
++++Topminnow Natural Area
Swamp Sparrow (Robert Beahchamp) first 10/29
++++Rocky Mountain National Park
(Be sure to check Trail Ridge Road status before visiting, weather will
close down)
American Three-toed Woodpecker (1) --Bear Lake (Michael McCloy) last

++++Douglas Reservoir
Bonaparte's Gull (3) (John Shenot) first 10/28
++++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

Pueblo County
++++Teller Reservoir
Curve-billed Thrasher (Van Truan) first 10/30
++++Pueblo Reservoir
Blue-headed Vireo (Percival:Van Truan) first 10/28
(below Dam, by footbridge that goes from Snakeskin Picnic to Swim Beach
Common Loon (5) (Percival) 6; last 10/28
Bonaparte's Gull (3) (Percival) (first 10/24) 5; last 10/28
Lesser Black-backed Gull (2) (Percival:Van Truan) last 10/28
Surf Scoter (8) (Percival/David Tonnessen) (first 10/24) 2; last 10/28
Long-tailed Duck (Percival) first 10/27
Red-necked Grebe (Percival) (first 10/25) last 10/27
Common Tern (Percival) last 10/27
Curve-billed Thrasher (Percival) last 10/27

Weld County
++++Union Reservoir
Red-necked Grebe --northwest corner (Luke Pheneger/Chris Owens) (first
10/17) last 10/29
Common Loon (Bill Prather) first 10/28
Bonaparte's Gull (3) (Mlodinow:Pheneger/Sue Riffe) (first 10/17) 1; last
++++Luna Reservoir
Bonaparte's Gull (Nathan Pieplow) first 10/28


Yuma County
++++Bonny Reservoir Area
Northern Cardinal --Wagon Wheel Campgrounds (Sheridan Samano) first 10/29
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


Chaffee County
++++Chaffee County
Lewis's Woodpecker (2) --Pleasant Avenue (David Dowell) last 10/29
Pinyon Jay (54) --Pleasant Avenue (David Dowell) last 10/29

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

Eagle County
++++Spring Park Reservoir
Barrow's Goldeneye (2 males) (Dick Filby) (first 10/28) 4; last 10/30

Jackson County
++++Eighteen Islands Reservoir
Tundra Swan (2) (David Dowell) reported 10/28
Pectoral Sandpiper (Dowell) first 10/28
++++Walden Reservoir and area
Common Loon (David Dowell) first 10/28
Greater Scaup (2) (David Dowell) first 10/28
Pectoral Sandpiper (2) (Dowell) first 10/28
Bonaparte's Gull (Dowell) first 10/28

Mesa County
++++James Robb Colorado River State Park
Bonaparte's Gull (Denise & Mark Vollmar) first 10/30
++++Grand Junction Wildlife Area
Black Phoebe (David Price) first 10/29
Sagebrush Sparrow (Price) first 10/29

Montrose County
++++Old Hwy 90 along Silver Hawk Ranch
Pinyon Jay (27) (Dexter:Wright) first 10/30
++++East 5th Avenue, Nucla
Pinyon Jay (53) (Dexter:Wright) (first 9/15) 48; last 10/30

Park County
++++Eleven Mile Reservoir
Surf Scoter (24) (Joey Kellner & all) first 10/29
White-winged Scoter (4) (Kellner & all) first 10/29
Common Loon (M.OB./Kellner & all) (first 10/23) 3; last 10/29
(all above: Joey Kellner, Dan Brooke & Cheryl Teuton)
++++Spinney Mountain
Surf Scoter (4) (Kellner & all) first 10/29
Common Loon (2) (Kellner & all) first 10/29
++++Antero Reservoir
Surf Scoter (Kellner & all) first 10/29
Common Loon (6) (Kellner & all) first 10/29
Sanderling (M.OB.) first 10/29
Bonaparte's Gull (M.OB.) first 10/29

Routt County
++++Lake Catamount
Surf Scoter (2) (Tom Litteral & all/JoAnn Potter Riggle) (first 10/29) 1;
last 10/30
Greater Scaup (JoAnn Riggle) (first 10/22) 1; last 10/30
Barrow's Goldeneye (JoAnn Riggle) (first 10/22) 8; last 10/30

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
Subscribe to "cobirders" by sending blank email to:
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