Date: 4/18/17 3:44 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for April 18, 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: With the many reports coming in daily this spring, RBA will reflect
daily sightings, not long term sightings, visit Colorado Birding Society's
website everyday!

Reports added: 4/17
Adams (Scissor-tailed Flycatcher, Bonaparte's Gull, Barn Owl, Eastern
Phoebe, Eastern Bluebird, Burrowing Owl)
Arapahoe (Black Swan, Bonaparte's Gull)
Boulder (Semipalmated Plover, Pectoral Sandpiper, possible Short-billed
Dowitcher, Black Phoebe, Eastern Phoebe)
Denver (Harris's Sparrow)
Jefferson/Douglas (Eastern Phoebe)
Pueblo (Carolina Wren, Nashville Warbler, Black Phoebe)
Weld (Greater White-fronted Goose, Greater Scaup, Mute Swan, Burrowing Owl)
Crowley (Snowy Plover)
Prowers (Northern Cardinal)
Kit Carson (Mountain Plover)
Alamosa (Pinyon Jay)
Archuleta (Trumpeter Swan, considered tame)
Chaffee (American Three-toed Woodpecker, Pinyon Jay)
Clear Creek (White-tailed Ptarmigan)
Delta (Chukar)
Gunnison (Gunnison Sage-Grouse)
Jackson (Greater Sage-Grouse, Marbled Godwit, Willet, Fox Sparrow)
Mesa (Gray Vireo, Black-throated Sparrow, Gray Flycatcher)
Routt (Greater Sage-Grouse, Sharp-tailed Grouse, Trumpeter Swan, Common
Loon, Williamson's Sapsucker)
Teller (American Three-toed Woodpecker, Williamson's Sapsucker)


Adams County
++++Barr Lake
Scissor-tailed Flycatcher (F. Wamboldt) first 4/17
Bonaparte's Gull (16) (Michael San Miguel/Candice Johnson) (first 4/11)
3; last 4/17
Barn Owl (Lorraine Lanning) last 4/17
+++Rocky Mountain Arsenal
Eastern Phoebe (Bob Spencer/Tim Ryan:Diane Roberts) (first 4/2) last 4/17
Eastern Bluebird (Ryan:Roberts) first 4/17
Burrowing Owl (4, 2 locations) (Stevens:Kosten/JoAnn Hackos) (first 3/31)
1; last 4/17
(new wildlife drive: north of mile 5 & near Havana & 88th Avenue)
Long-billed Curlew --just north/mile 3 (Kosten:Ehlmann:Davenport) first
++++Lowell Ponds Wildlife Area
Northern Mockingbird (Gabriel Wiltse) first 4/16

Adams/Denver Counties
++++DIA Owl Loop
Burrowing Owl
(3) --prairie dog town at W. Cargo Road & Third Creek
(Stevens/Kosten:Ehlmann:Davenport) (first 3/15) 3; last 4/16

Arapahoe County
++++Blackstone County Club
Black Swan --Blackstone & Kettle (Jill & Brad
Stewart/Kosten:Ehlmann:Davenport) (first 4/15) last 4/17
++++Cherry Creek Reservoir
Bonaparte's Gull (11) (Cynthia Madsen) first 4/17
++++Marjorie Perry Nature Preserve
White-throated Sparrow (Jared Del Rosso) last 4/15

Boulder County
++++Lagerman Reservoir
Semipalmated Plover (Mark Minner-Lee) first 4/17
Pectoral Sandpiper (2) (Luke Pheneger) first 4/17
Possible Short-billed Dowitcher (Pheneger) first 4/17
++++Walden Ponds
Black Phoebe --Boulder Creek/75th street (Jonathan Montgomery/Jeff Parks)
(first 3/22) last 4/17
Eastern Phoebe (Marion Warren/Jeff Parks) (first 4/16) last 4/17
++++St. Vrain Creek at 63rd Street
Eastern Phoebe (2) (Peter Burke/Christian Nunes) (first 4/15) last 4/17
++++Crane Hollow Road
Black Phoebe --Crane Hollow Ponds (Mike Hensley) last 4/16
Eastern Phoebe --Crane Hollow Ponds (Mike Hensley) last 4/16
++++Baseline Reservoir
Common Loon (Jeff Parks/Ted Floyd) (first 3/29) last 4/16
++++Clark Reservoir
Greater Scaup (2) (Ted Floyd/Peter Burke) (first 4/14) last 4/16
++++McIntosh Lake
Long-billed Curlew (9) --flew away (Peter Burke) first 4/16
Bonaparte's Gull (Christian Nunes/Floyd) (first 4/1) last 4/15
++++Jim Hamm Park
Marbled Godwit (Ted Floyd) first 4/15

Denver County
++++Westerly Creek Park
Harris's Sparrow --east of 2365 Beeler/south of retention area (Jason
Bidgood/Washburn) (first 3/5) last 4/17

El Paso County
++++Ramah Wildlife Area
Greater Scaup (Alan Versaw) last 4/15
Marbled Godwit (Versaw) first 4/15
++++Mallard Pond
Greater Scaup (2) (David & Cheryl Hubbard) first 4/15
++++Hanover Road and area
Curve-billed Thrasher --btw Hammer & DeGroot Roads (Minner-Lee/Kiki
Widjaja) (first 3/31) 3; last 4/15
Curve-billed Thrasher --Fire Station (John Bruder) last 4/15
Curve-billed Thrasher (3) --Peyton Hwy/south Hanover Rd (Widjaja) last
Ladder-backed Woodpecker --btw Hammer & DeGroot Roads (Widjaja) first

El Paso/Pueblo Counties
++++Chico Basin Ranch (fee area)
Long-eared Owl (6) --banding area (John Drummond/John Bruder) (first
1/30) last 4/15
Eastern Phoebe --banding station (Graham Montgomery/Bruder) (first 4/12)
last 4/15
Chihuahuan Raven (3) (Widjaja) last 4/15
Curve-billed Thrasher (2) (Widjaja) last 4/15
Northern Bobwhite (4) (Widjaja) last 4/15
Ladder-backed Woodpecker (Widjaja) last 4/15
(Above: El Paso County)
Ladder-backed Woodpecker (3) --headquarters (Laura Steadman) last 4/14
(Above: Pueblo County)

Jefferson County
++++Reynolds Park
Dusky Grouse (2) (Stevens/John Breitsch) (first 3/17) 4; last 4/16
Williamson's Sapsucker (Merlynn Brown/Breitsch) (first 3/15) last 4/16
++++Genesee Mountain Park
Williamson's Sapsucker (2) (Richard Stevens/Niels Poul Dreyer) (first
3/10) 2; last 4/16
++++Robert A. Easton Regional Park
Burrowing Owl (2) (Brian Johnson/Thomas Holub) (first 4/6) last 4/16
++++Great Western Reservoir
Long-billed Curlew (Todd Deininger) first 4/15
++++Pine Valley Ranch Park & Pike National Forest
American Three-toed Woodpecker
(PNF) --Buck Gulch trail, 250 yards south of park boundary line, 35 yards
east of trail (Merlynn Brown) last 4/12
Northern Pygmy-Owl
(PVR) --heard only Buck Gulch trail, from Pine Lake Loop to about 50
yards south (Merlynn Brown) last 4/12

Jefferson/Douglas Counties
++++Chatfield Reservoir
Eastern Phoebe (Thomas Holub) last 4/17
Eastern Phoebe --upstream kingfisher bridge (Gregg Goodrich/Holub:Pate)
(first 3/25) 2; last 4/15
Eastern Phoebe --Plum Creek Delta (Loch Kilpatrick) first 4/14

Pueblo County
++++Arkansas River Trail, below City Park
Carolina Wren (Truan/Mel Goff & all) (first 3/18) last 4/17
++++Pueblo Reservoir
Nashville Warbler --Osprey picnic area (Mel Goff & all) first 4/17
Black Phoebe --below dam (Jan Hansen & all/David Rymal) (first 4/10) last
Red-necked Grebe --north shore marina area (Tom & Debbie Behnfield) last
Curve-billed Thrasher (2) --north marina (Behnfield) last 4/15
++++Pueblo Mountain Park
Acorn Woodpecker (Tom & Debbie Behnfield) 2; last 4/15

Weld County
++++Firestone Gravel Pits
Greater White-fronted Goose (Mark Minner-Lee) last 4/17
Greater Scaup (9) (Rebecca Grieser) last 4/17
++++Weld County Road 37/CR 46 Ponds
Mute Swan (Frank Farrell) last 4/17
++++Weld County Road 59 Ponds
Burrowing Owl (Rebecca Grieser) first 4/17
++++Beebe Draw Ponds
Pectoral Sandpiper (Renee Casias) first 4/16
Glossy Ibis (Gene Rutherford/Renee Casias) (first 4/15) last 4/16
(moving: CR 46 & CR 41; previously CR 40)
++++Union Reservoir
Bonaparte's Gull (3) (Mark Miller/Peter Burke) (first 3/18) 8; last 4/16
Sharp-tailed Grouse(Re-introduced Birds, Plains subspecies)!
(10) --Pawnee Buttes (Gavin Bieber) first 4/16
(19) --CR 134, btw CR 111 & CR 115 (Kibbe:Goldthwait) 15; last 4/16
(3) --CR 111/south/CR 134 (Edie Israel) first 4/16
++++Pawnee National Grasslands, Pawnee Buttes Area
Mountain Plover (6) (Gavin Bieber) first 4/15
Chestnut-collared Longspur (50) (Bieber) first 4/15
++++Mountain Plover Loops
Mountain Plover (7) (Gary Lefko) first 4/15
Burrowing Owl (4) (Lefko) first 4/15
Sharp-tailed Grouse(Re-introduced Birds, Plains subspecies)!
(10) --Pawnee Buttes (Gavin Bieber) first 4/16


Baca County
++++Two Buttes Reservoir & area
Summer Tanager (Mike McCloy) first 4/16
Eastern Phoebe (Washburn:Simmons/McCloy) (first 4/2) last 4/16
Chihuahuan Raven (McCloy) last 4/16
Palm Warbler (Joey Kellner) first 4/16
Eastern Phoebe (Washburn:Simmons/Joey Kellner) (first 4/2) last 4/14
++++Cottonwood Canyon
Carolina Wren (Joey Kellner) first 4/15
Rufous-crowned Sparrow (Kellner) last 4/15
Rufous-crowned Sparrow --CR 5 (Baca & Las Animas Ctys) (Kellner) last
++++Sand Canyon
Curve-billed Thrasher (Kellner) first 4/15
++++County Road 13, south CR X
Burrowing Owl (3) (Joey Kellner) first 4/15
Northern Mockingbird (Kellner) first 4/15

Bent County
++++John Martin Reservoir area
Piping Plover (Duane Nelson) first 4/14
(in closed areas: contacnt Duane at least one day in advance to see?:

Crowley County
++++Lake Meredith
Snowy Plover (up to 4) --feedlot sewage area (Mike McCloy/Adam Vesely)
(first 4/7) 1; last 4/17
Black-bellied Plover (Nathan Pieplow) first 4/15
Marbled Godwit (Pieplow) first 4/15
Bonaparte's Gull (4) (Mike McCloy/Nathan Pieplow) (first 4/7) 6; last 4/15
++++County Road 31
Mountain Plover --hwy 96 to Horse Creek (Nathan Pieplow) first 4/15

Otero County
++++Lake Holbrook
Willet (9) (Gwen Moore) first 4/16

Prowers County
++++Willow Creek Park
Northern Cardinal (Betty Glass) first 4/17
++++Lamar Community College
Barn Owl (Joey Kellner) first 4/16
Northern Cardinal (Joey Kellner) 2; last 4/14


Cheyenne County
++++County Road M (btw CR 2 & CR 8)
Burrowing Owl (17) (Janet Paisley) first 4/14

Kit Carson County
++++County Road 13
Mountain Plover --south/CR J (Steve Larson) first 4/17
++++County Road K
Mountain Plover
(1) --CR K/btw CR 57 & CR 55 (Daniel Maynard) first 4/13
(2) --CR K/btw CR 57 &CR 56 (Eric Hough) first 4/10

Lincoln County
++++County Road J area
Cassin's Sparrow
--CR 10/btw CR J & CR M (Joey Kellner) first 4/14
--CR J/west/CR 16 (Janet Paisley) first 4/14
++++County Road 41 area
Mountain Plover
(1) --CR 3F, east/CR 41 (Jan Hansen/John Vanderpoel) (first 4/7) last 4/14
(1) --CR 39, south/hwy 24 (Janel Paisley) first 4/14

Morgan County
++++Jackson Reservoir
Northern Mockingbird (Linda Lee) first 4/16

Yuma County
++++Bonny Reservoir Area
Greater Prairie-Chicken (4) --Hale Ponds (Sue Riffe) first 4/14
Long-eared Owl --Hale Ponds (Riffe) last 4/14
Red-bellied Woodpecker --Hale Ponds (Riffe) last 4/14
Eastern Bluebird (Riffe) last 4/14
Sprague's Pipit --Pipit Hill (Sue Riffe) reported 4/14
Northern Cardinal (2) --Hale Ponds (Riffe) last 4/14
Eastern Meadowlark --Hale Ponds (Riffe) reported 4/14
++++Wray Fishing Unit
White-eyed Vireo (Gibbons:Sayles/Timo Mitzen) (first 4/11) last 4/13
(second earliest date, 4/8 first) --junipers at entrance road
Eastern Bluebird (2) (CoBus/Mitzen) (last 1/1) 2; last 4/13
Northern Cardinal (Mitzen) last 4/13
++++County Road KK
Greater Prairie-Chicken (20) (Richard Sayles/Joan Baker) (first 4/11) 21;
last 4/13
Burrowing Owl (3) (Sayles) first 4/11
Harris's Sparrow (Sayles) first 4/11
++++CR V, btw CR 59 & CR 57
Grasshopper Sparrow (3) (Dan Maynard) first 4/13
++++CR 45
Greater Prairie-Chicken --Between Hwy 385 and Lek, 1.7 miles/east/hwy 385
(Stevens:Kosten/Art Hudak) 2; (first 2/18) last 4/8
(Between Hwy 385 and Lek, 1.7 miles/east/hwy 385)


Alamosa County
++++Great Sand Dunes National Monument
Pinyon Jay (60) --Visitor's Center (Sidney Wade) last 4/17

Archuleta County
+++Pagosa Springs
Lewis's Woodpecker
(up to 9) --5th & Loma (Byron Greco) (first 4/12) 2; last 4/15

Chaffee County
++++Monarch Pass
American Three-toed Woodpecker (2) --pullover area & north (Stevens &
all/Sulli Gibson) (first 3/5) 4; last 4/17
++++Chaffee County
Pinyon Jay (9) --CR 291 (Sulli Gibson) first 4/17
++++Sands Lake Wildlife Area
Barrow's Goldeneye (8) (Gwen Moore/Jeff Guy) (first 11/13) 2; last 4/16
++++Ice Lake
Pinyon Jay (Hagenlocher) last 4/16

Clear Creek County
++++Loveland Pass
White-tailed Ptarmigan (see website for additional locations)
(3) --below west summit (Washburn:Simmons/Gavin Bieber) (first 11/22)
last 4/17
++++Chicago Lakes Trail
Barrow's Goldeneye (3) (Ben Lagasse) first 4/15
Fox Sparrow (3, slate colored) (Lagasse) first 4/15
Brown-capped Rosy Finch (Lagasse) first 4/15

Delta County
++++Escalante Canyon
Chukar (Stevens:Humboldt/Carl Bendorf) (first 3/22) 6; last 4/17

Eagle County
++++Edwards Sewer Plant
Fox Sparrow (slate colored) (JoAnn Riggle) first 4/14

Fremont County
++++Florence River Park
Eastern Phoebe (Moss) last 4/15
Black Phoebe (Rich Miller/Moss) (first 3/22) reported 4/10
++++Holcim Wetlands
Black Phoebe --area closed, view from CR 20 (Moss) first 4/15

Garfield County
++++Spring Park Reservoir
Barrow's Goldeneye (50) (Dick Filby) (first 4/8) 74; last 4/13

Grand County
++++Windy Gap Reservoir
Barrow's Goldeneye (10) (Noreen Baker/Gwen Moore) (first 3/13) 16; last

Gunnison County
++++Waunita Hot Springs Area
Gunnison Sage-Grouse (up to 25) (Stevens/Ed Harper) (first 3/5) 5; last
++++Crested Butte
Rosy Finches (102, 3 species) --Hunter Hill Road (Eugene Hunn) first 4/15
Rosy Finches (152, 3 species) --Bitter Root Circle (Stephan Lorenz/Ruth
Richards) (first 4/11) no Gray-crowned last 4/13

Jackson County
++++County Road 26b
Greater Sage-Grouse (up to 117) --CR 26b (Stevens:Michaels/Scott
Somershoe) (first 12/17) 39; last 4/17
++++Walden Reservoir and area
Marbled Godwit (2) --SE side (Gwen Moore/Tom Johnson) (first 4/16) 5;
last 4/17
Willet (Gavin Bieber) first 4/17
Greater Scaup (Susan Bonfiglio:Matt Clark) first 4/16
++++Colorado State Forest
Fox Sparrow (slate colored) (Gavin Bieber) first 4/17
American Three toed Woodpecker
(1) --Ranger Lakes (Matt Clark) last 4/16
(1) --CR 41a (Matt Clark) last 4/16
Boreal Owl
(2) --from Hwy 14, west of Cameron Pass (Stevens:Kosten/Francis
Commercon) (first 3/1) last 4/15
++++County Roads
Bohemian Waxwing
(5) --CR 41 (Ruben & Victor Stoll/Michael O'Brien) (first 4/1) 75; last
(20) --Gould (O'Brien) first 4/12

La Plata County
++++Pastorius Reservoir
Semipalmated Plover (Amy Dobbins:Susan Allerton) first 4/15
Long-billed Curlew (4) (Amy Dobbins) (first 4/11) last 4/15
Bonaparte's Gull (1) (Susan Allerton/Dobbins) (first 4/10) 2; last 4/15

Mesa County
++++County Road 4 1/10 (Gateway Cottonwoods)
Gray Vireo (Dexter:Wright) first 4/17
Black-throated Sparrow (2) (Dexter:Wright) first 4/17
++++Colorado National Monument
Gray Flycatcher (3) (Jeff Buecking) first 4/17
Gray Vireo (Jeff Buecking) first 4/17
Black-throated Gray Warbler (Tom Johnson) first 4/16
Black-throated Sparrow (up to 6) (Stevens/Tom Johnson) (first 4/8) 4;
last 4/16
++++2.8 Road area North of Old Highway 6/50
Sagebrush Sparrow (3) --2 Road (Cameron Cox/Tom Johnson) (first 4/10)
last 4/15
++++Grand Mesa North
Boreal Owl --south of Spruce Grove Campgrounds (Stevens & all) (first
3/3) 2; last 4/8

Moffat County
++++County Road 107
Bonaparte's Gull (2) (Tom Johnson) first 4/16

Montrose County
++++Black Canyon of Gunnison National Park
Dusky Grouse (Stevens & all/Tom Johnson) (first 3/4) 3; last 4/15
(Latest: southern entrance; also check South Rim Drive & Campgrounds)
Northern Pygmy-Owl (Johnson:Fellenbaum) last 4/15
Fox Sparrow (2, slate colored) (Tom Johnson) last 4/15
(NOTE: South Rim Road is closed at Visitor's Center)

Routt County
++++County Road 46b
Greater Sage-Grouse (1) (Tom Johnson) first 4/17
Sharp-tailed Grouse (8) --see map (Michael O'Brien/Scott Somershoe)
(first 4/14) 7; last 4/17
++++Stagecoach Recreational Area
Trumpeter Swan (Tom Litteral/Matt Goldowitz/Tresa Moulton) (first 3/25)
last 4/5 again 4/17
Common Loon (Craig Robson/Moulton) (first 4/8) last 4/17
++++County Road 302
Williamson's Sapsucker (Tom Johnson) first 4/17
++++80 Route Leks
Dusky Grouse --2nd cattle guard (Stevens & all/Kathy Seymour) (first 4/9)
2; last 4/15
Sharp-tailed Grouse (8) (Andrew McCormick) first 4/13
Greater Sage-Grouse (several heard from cattle guard) (Stevens & all)
first 4/9
++++Twenty Road Leks
Sharp-tailed Grouse (5) (Stevens & all/Simon Harvey) (first 3/3) last

Teller County
++++Mueller State Park
Williamson's Sapsucker (Stevens:Michaels) last 4/17
American Three-toed Woodpecker (Stevens:Michaels) last 4/17

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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