Date: 4/17/17 3:38 am
From: Amy Davenport <cobussec...> [cobirders] <cobirders-noreply...>
Subject: [cobirders] Colorado Rare Bird Alert for April 17, 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: 4/16
Adams (Long-billed Curlew, Burrowing Owl, Northern Mockingbird, Barn Owl)
Adams/Denver (Burrowing Owl)
Arapahoe (Black Swan)
Boulder (Black Phoebe, Eastern Phoebe, Common Loon, Greater Scaup,
Long-billed Curlew)
Denver (Harris's Sparrow)
Jefferson (Dusky Grouse, Williamson's Sapsucker, Burrowing Owl)
Weld (Pectoral Sandpiper, Glossy Ibis, Bonaparte's Gull, Sharp-tailed
Grouse, Mute Swan)
Baca (Summer Tanager, Eastern Phoebe, Chihuahuan Raven, Palm Warbler)
Crowley (Snowy Plover)
Otero (Willet)
Prowers (Barn Owl)
Morgan (Northern Mockingbird)
Chaffee (Barrow's Goldeneye, Pinyon Jay)
Grand (Barrow's Goldeneye)
Jackson (Greater Sage-Grouse, Greater Scaup, Marbled Godwit, American
Three-toed Woodpecker)
Mesa (Chukar, Black-throated Sparrow, Black-throated Gray Warbler)
Moffat (Bonaparte's Gull)
Routt (Sharp-tailed Grouse, Common Loon)


Adams County
+++Rocky Mountain Arsenal
Long-billed Curlew --just north/mile 3 (Kosten:Ehlmann:Davenport) first
Burrowing Owl (4, 2 locations) (Stevens:Kosten/All) (first 3/31) 3; last
(new wildlife drive: north of mile 5 & near Havana & 88th Avenue)
++++Lowell Ponds Wildlife Area
Northern Mockingbird (Gabriel Wiltse) first 4/16
++++First Creek Trail
Barn Owl (John Breitsch) (first 3/10) last 4/14
++++Barr Lake
Barn Owl (Bez Bezuidenhout) last 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 and Brad Stewart/Washburn:Simmons)
(first 4/15) last 4/16
++++Marjorie Perry Nature Preserve
White-throated Sparrow (Jared Del Rosso) last 4/15
++++South Platte Park Reservoir & Area
Common Loon --Lakes North of C470 (Robert Folzenlogen) (first 4/12) last

Boulder County
++++Walden Ponds Map
Black Phoebe --Boulder Creek/75th street (Jonathan Montgomery/Marion
Warren) (first 3/22) last 4/16
Eastern Phoebe (Marion Warren) first 4/16
++++Crane Hollow Road Map
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
++++St. Vrain Creek at 63rd Street
Eastern Phoebe (2) (Peter Burke) first 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/Dave King) (first 3/5) last 4/16

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
++++Sondermann Park
Dusky Grouse (David Chartier) first 4/14
(on the path going north along the creek just before the second bridge)
++++Hanover Road
Curve-billed Thrasher --east/DeGroot Road (Steadman:Mezger) last 4/14

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 --upstream kingfisher bridge (Gregg Goodrich/Holub:Pate)
(first 3/25) 2; last 4/15
Eastern Phoebe --Plum Creek Delta (Loch Kilpatrick) first 4/14

Larimer County
++++Boyd Lake State Park
Bonaparte's Gull (8) (Andy Bankert) last 4/14
++++Horseshoe Lake
Lesser Black-backed Gull (4) (McCloy:Bankert/Bankert) (first 4/10) last
++++North Poudre Reservoir #4
Common Loon (Janice Backstrom) first 4/13

Pueblo County
++++Pueblo Mountain Park
Acorn Woodpecker (Tom & Debbie Behnfield) 2; last 4/15
++++Pueblo Reservoir
Red-necked Grebe --north shore marina area (Tom & Debbie Behnfield) last
Curve-billed Thrasher (2) --north marina (Behnfield) last 4/15
++++Cattail Crossing
Curve-billed Thrasher (Darth Aves/Patricia Stuckey) (first 10/17) last
++++IL Road, north of Youtsey Airport
Curve-billed Thrasher (4) (Roderick/Gavin Bieber) (first 4/2) last 4/13
Sage Thrasher (Bieber) first 4/13
Northern Mockingbird (Bieber) first 4/13
++++Arkansas River Trail, below City Park
Black Phoebe --east of Pueblo Blvd (Maikel Wise/Charles Hundertmark)
(first 4/5) last 4/12

Weld County
++++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
++++Weld County Road 37/CR 46 Ponds
Mute Swan (Renee Casias) 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
++++Greeley Poudre River Trail, Sheep Draw
Northern Caracara --Sheep Draw, east of North 71st Avenue (Shawn
Mason:Blake Hess) first 4/15
++++Lower Latham Reservoir
Long-billed Curlew (2) (Gene Rutherford) first 4/15
++++Drake Lake
Northern Mockingbird (Joshua Smith) first 4/15
++++CR 79; South of High School, Briggsdale
Mountain Plover (Joan Baker) first 4/12
++++ Pawnee National Grasslands area
Mountain Plover
(1) --CR 96/north of pipe gate/east/Murphy's Pasture (Stevens:Kosten)
first 4/12
Chestnut-collared Longspur
(3) --CR 110/CR 73 (Joan Baker) first 4/12
(1) --CR 96/east/Murphy's Pasture) (Stevens:Kosten) first 4/12
(1) --SE/Hwy 85/CR 114:may require permit which we have (Stevens:Kosten)
first 4/12
(4) --CR 113/CR 82 (Richard Sayles) first 4/11
(3) --Murphy's Pasture (Simon Harvey/M.OB.) (first 4/7) last 4/11
Sharp-tailed Grouse(Re-introduced Birds, Plains subspecies)!
(10) --Pawnee Buttes (Gavin Bieber) first 4/16
(1) --CR 136, east of CR 99 (Casey Weissburg) last 4/12
(2) --CR 138, btw CR 113 & CR 111 (Casey Weissburg) last 4/12


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 (2) --feedlot sewage area (Mike McCloy/Teuton:Brooke) (first
4/7) 4; last 4/16
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
++++Lake Cheraw
Glossy Ibis (Gavin Bieber) reported 4/13

Prowers County
++++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 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
++++Hugo Wildlife Area
Mountain Plover (2) (Sue Riffe) first 4/13
++++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
(1) --CR J btw CR 39 & CR 44 (Sue Riffe) first 4/13
(2) --CR 3F & CR 43 (Tom Johnson) (first 4/8) 8; last 4/12

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)


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

Chaffee County
++++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
++++Monarch Pass
American Three-toed Woodpecker (2) --pullover area (Stevens & all/Janet
Paisley) (first 3/5) 2; last 4/12
++++Chaffee County
Lewis's Woodpecker (1) --Gunnison Avenue (Niels Poul Dreyer) last 4/14

Clear Creek County
++++Loveland Pass
White-tailed Ptarmigan (see website for additional locations)
(3) --below west summit (Washburn:Simmons/Kevin DeBoer:Olaf Danielson)
(first 11/22) 2; last 4/15
(1) --(Jeff Buecking) 2; last 4/14
++++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

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
++++Black Hollow Reservoir
Eastern Phoebe --along dam (Joe LaFleur) first 4/14
++++Tunnel Drive area
Rufous-crowned Sparrow (Jan Hansen) last 4/10

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/Eugene Hunn) (first 3/5) 6; 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/Holden
Maxfield) (first 12/17) 55; last 4/16
++++Walden Reservoir and area
Greater Scaup (Susan Bonfiglio:Matt Clark) first 4/16
Marbled Godwit (2) --SE side (Gwen Moore) first 4/16
++++Colorado State Forest
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
++++Cameo/Coal Canyon
Chukar (2) Stevens & all/Ed Harper) (first 3/3) 3; last 4/16
Black-throated Sparrow (2) (Hansen:Gabriel:Pitts/Ed Harper) (first 4/4)
6; last 4/16
++++Colorado National Monument
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)

Montezuma County
++++McPhee Reservoir
Common Loon (Carl Lundblad) first 4/13

Rio Blanco County
++++Rio Blanco Reservoir
Common Loon (Gavin Bieber/Janet Fedrizzi) (first 4/10) last 4/12

Routt County
++++County Road 46b
Sharp-tailed Grouse (8) --see map (Michael O'Brien/Linda Widdop) (first
4/14) 4; last 4/16
++++Stagecoach Recreational Area
Common Loon (Craig Robson/Erin Birtwistle) (first 4/8) last 4/16
++++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

Summit County
++++Blue River Bridge at CR 1870
Fox Sparrow (slate colored) (Jeff Guy) first 4/14

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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