Date: 4/8/18 3:06 am
From: Joyce Takamine <jabirujt...>
Subject: [cobirds] Colorado Rare Bird Alert, 8 April 2018
Compiler: Joyce Takamine
Date: April 8, 2018
e-mail: RBA AT

This is the Rare Bird Alert for Sunday, April 8 sponsored by Denver Field
Ornithologists and the Bird Conservancy of the Rockies.

Highlight species include: (* indicates new information on this species)
NOTE: The RBA is now using the new AOU checklist and the order of families
has changed.
Snow Goose (*Boulder, Garfield, San Miguel)
Ross’s Goose (*Douglas, *Weld)
Greater White-fronted Goose (*Jefferson, Prowers, *Rio Grande, *Weld)
Wood Duck (Montezuma)
Sharp-tailed Grouse (*Weld)
Red-necked Grebe (*Jefferson)
Clark’s Grebe (*Fremont)
Chimney Swift (Boulder)
White-throated Swift (Chaffee, Pueblo)
Broad-tailed Hummingbird (El Paso)
Virginia Rail (Chaffee)
Sandhill Crane (*Jefferson, *Larimer, Mesa, Montezuma, *Rio Grande, *Weld)
Black-necked Stilt (*Weld)
Mountain Plover (El Paso, Lincoln)
Long-billed Curlew (*Boulder, Mesa)
Least Sandpiper (La Plata, *Weld)
Long-billed Dowitcher (El Paso)
Lesser Yellowlegs (El Paso, Jefferson)
Willet (Arapahoe)
Bonaparte’s Gull (Boulder, Chaffee)
Franklin’s Gull (Montezuma)
California Gull (Douglas, Mesa)
Iceland Gull (El Paso, Pueblo)
Glaucous Gull (Washington)
Pacific Loon (*Fremont)
Double-crested Cormornants (*Denver)
American White Pelican (Douglas)
Great Egret (Chaffee, La Plata, *Larimer, Moffat, *Weld)
Snowy Egret (Adams, *Denver)
Little Blue Heron (*Otero)
White-faced Ibis (*Mesa, Rio Grande)
Turkey Vulture (*Boulder, Douglas, Larimer, Mineral)
Northern Goshawk (*Douglas, *Jefferson, Larimer)
Swainson’s Hawk (*Jackson, Jefferson)
Burrowing Owl (*El Paso, Mesa)
Ladder-backed Woodpecker (*El Paso)
Black Phoebe (Fremont, *Mesa)
Eastern Phoebe (*Boulder, *Chaffee, Custer, *Fremont, *Larimer, *Otero)
Vermilion Flycatcher (El Paso)
Western Kingbird (El Paso)
Woodhouse’s Scrub-Jay (Adams)
Chihuahuan Raven (*Crowley, Fremont)
Tree Swallow (*Otero)
Violet-green Swallow (Araphoe, *Denver, *Fremont, *Jefferson, *Larimer)
Northern Rough-winged Swallow (Arapahoe, *Larimer)
Bank Swallow (*Chaffee, *Larimer, *Otero)
Cliff Swallow (*Chaffee, *Larimer, *Otero)
Barn Swallow (*Broomfield, *Chaffee, *Denver, *Larimer, *Otero)
Mountain Chickadee (*Otero)
Golden-crowned Kinglet (*Denver)
Mountain Bluebird (Lincoln)
Swainson’s Thrush (*Adams)
Hermit Thrush (Adams, *Denver, Lincoln, *Weld)
Gray Catbird (Larimer)
Curve-billed Thrasher (*El Paso, *Fremont)
Sage Thrasher (*Boulder, El Paso)
Northern Mockingbird (Broomfield, El Paso)
American Pipit (*Crowley, Jefferson, Larimer, Lincoln)
Gray-crowned Rosy-Finch (San Miguel)
Black Rosy-Finch (San Miguel)
Brown-capped Rosy-Finch (San Miguel)
Chestnut-collared Longspur (El Paso, Lincoln, *Weld)
McCown’s Longspur (El Paso)
Green-tailed Towhee (Jefferson)
Cassin’s Sparrow (El Paso)
Chipping Sparrow (*Yuma)
Vesper Sparrow (*Boulder, *Crowley, *El Paso, Jefferson)
Sagebrush Sparrow (Boulder, *Larimer)
Savannah Sparrow (*Weld)
Lincoln’s Sparrow (*Adams, *Crowley, *Larimer, *Otero, *Weld)
Harris’s Sparrow (*Denver, El Paso, *Weld)
Brown-headed Cowbird Yuma)
Northern Cardinal (Boulder)

---On April 3 at Lowell Ponds (Clear Creek Valley Park), Christy Payne
reported Snowy Egret.
---On April 3 at east Lake Shores Park, Don Mullson reported Woodhouse’s
---On April 3 at Lake Sangraco, Christy Payne reported Snowy Egret.
---On April 6 at Barr Lake SP, Susan Quinlan reported Hermit Thrush. On
April 7 at Barr Lake SP Niedrach trail and Visitor Center, Brian Johnson
reported Swainson’s Thrush.
---On April 7 at Pond N of Big Dry Creek Park, Matt Hofeditz reported
Lincoln’s Sparrow.
---On April 7 at Metzger Farms OS, Matt Hofeditz reported Lincoln’s Sparrow.
---On April 7 at Mann-Nyholt Lake, Adam Veseley reported Lincoln’s Sparrow.


---On April 6 at South Platte Park, Edward Donnan reported Willet.
---On April 6 at Centennial Park, Art Hudak reported Northern Rough-winged
Swallow and 8 Violet-green Swallows.

---On April 4 at Boulder Reservoir complex Ted Floyd reported 2 Snow Geese,
Bonaparte’s Gull, Sage Thrasher, and Vesper Sparrow; Dan Zmolek and Leslie
S reported 2 Snow Geese and Sage Thrasher. On April 6 at Boulder Reservoir
Complex, David Dowell reported 2 Snow Geese. On April 7 at Boulder
Reservoir Complex Ron Podhajsky, Peter Burke, Kathie Lehman, and David
Haskell, Dan Zmolek, and Leslies S reported 2 Snow Geese, 2 Vesper
Sparrows, and Sage Thrasher and 3 Turkey Vultures.
---On April 4 at Boulder Creek and 75th St, Nancy Ries Morrison and Ted
Floyd reported Eastern Phoebe. On April 5 at Boulder Creek and 75th St,
Gregg Goodrich and Anna Troth reported Eastern Phoebe on both sides of the
bridge. On April 7 at Boulder Creek and 75th St, Emil Yappert and Richard
Trinkner reported Eastern Phoebe; Ernest Crvich reported 2 Eastern Phoebes
at Boulder Creek and 75th St but west of bridge.
---On April 4 at Pella Crossing OS, Carl Starace reported 5 Chimney Swift.
---On April 4 at Melody Park (16th and Kingwood) in Boulder, Bob Fiehweg
reported Northern Cardinal.
---On April 5 at Foothills Community Park North end, Christian Nunes
reported Sagebrush Sparrow and several birders got to see it.
---On April 5 at Twin Lakes, Laura Steadman reported 20 Chimney Swifts.
---On April 5 at Stearns Lake, Ted Floyd reported 2 Snow Geese.
---On April 7 in area around Hwy 66 between N 61st and N 63rd St in
Longmont, Ethan Kistler, Christian Nunes, David Waltman, Dan Zmolek, Leslie
S reported 2 Long-billed Curlews and Peter Burke reported 3 Long-billed
Curlews N of Hwy 66; Willem van Vliet reported 3 Long-billed Curlews on
N63rd West of McCall Lake.

---On April 7 at Plaster Reservoir, Matt Hofeditz reported Barn Swallow.

---On April 3 at Buena Vista Ice Pond (view from road), Mike Buccieri
reported Bonaparte’s Gull. On April 4 at Buenta Vista Ice Pond (view from
road), Christian Hagenlocher reported Great Egret and Bonaparte’s Gull.
---On April 4 on CR 367, Christian Hagenlocher reported 2 Barn Swallows.
---On April 5 at Bob’s Rocks, Christian Hagenlocher reported 4
White-throated Swifts.
---On April 7 at Sands Lake SWA, Michael O’Brien and VENT Grouse Tour
reported Bank Swallow, Eastern Phoebe, 20 Cliff Swallows, and 5 Barn

---On April 7 at Lake Henry, Steve Mlodinow reported Chihuahuan Raven, 3
American Pipits, Vesper Sparrow, and 2 Lincoln’s Sparrows.

---On April 4 in Wetmore Area, Jerry DeBoer reported 2 Eastern Phoebe.

---On April 5 at First Creek at DEN OS, John Breitsch reported Harris’s
Sparrow. On April 7 at First Creek at DEN OS, Lorraine Lanning reported
Harris’s Sparrow.
---On April 7 at Denver City Park, Patrick O’Driscoll and DFO Field Trip
reported 4 Snowy Egrets, 445 Double-crested Cormornants and 200 nests, 2
Violet-green Swallows, 3 Barn Swallows and Golden-crowned Kinglet.
---On April 7 at Denver Botanic Gardnes and Cheeseman Park, Rebecca Laroche
reported 2 Golden-crowned Kinglets and Hermit Thrush.

---On April 5 at Parker Regional Park (aka Salisbury Equestrian Park), Tim
Ryan reported Ross’s Goose. On April 7 at Parker Regional Park (aka
Salisbury Equestrian Park), Sue Plankis reported Ross’s Goose.
---On April 7 at Roxborough SP, Candice Johnson reported Northern Goshawk.

---On April 5 at Hanover Road, Diane Roberts and her DFO Field Trip
reported pair of Ladder-backed Woodpeckers, Curve-billed Thrasher, 2
Burrowing Owls, 4 Sage Thrashers, and 2 Cassins Sparrows. On April 6 on
Hanover Rd on pine tree at oasis, Jim Merritt reported Ladder-backed
Woodpecker; R Knapp reported 2 Western Kingbirds. On April 7 on Hanover
Road Gloria Nikolai reported 3 Curve-billed Thrashers and 2 Burrowing Owls.
---On April 4 at Ramah Reservoir SWA, Cheri Phillips reported Long-billed
---On April 3 at Squirrel Creek Road Reservoir, Diane Roberts, Chris Brobin
and Tanja Britton reported Lesser Yellowlegs.
---On April 2 at Hanover Fire Station, Linda Hodges and many other birders
reported m Vermilion Flycatcher and Curve-billed Thrashers, and Cassin’s
Sparrows. On April 3 at Hanover Fire Station, David Tonnessen and several
other birders reported that the Vermilion Flycatcher continues with
Curve-billed Thrashers. On April 4 at Hanover Fire Station, Christy Payne
and several other birders reported Vermilion Flycatcher.
---On April 2 at Chico Basin Ranch on road to banding station, Linda Hodges
reported 4 Sage Thrashers. On April 5 at Chico Basin Ranch (fee area),
Jeannie Mitchell and John Drummond reported 2 Burrowing Owls, 3
Ladder-backed Woodpeckers, and Curve-billed Thrasher; Patraicia Bacchetti
reported Curve-billed Thrasher.
---On April 2 at Hanover Road and De Groot, Linda Hodges reported 4
Burrowing Owls. On April 4 at Hanover Road and De Groot, Rod Schmidt
reported Curve-billed Thrasher.
---On April 2 at Squirrel Creek Rd and Bar O Rd, John Bruder reported 6
Chestnut-Collared Longspurs. On April 2 at Squirrel Creek Rd East, Monday
Birders reported 3 Burrowing Owls and 3 Chestnut-collared Longspurs.
---On April 3 on De Groot Rd, Loch Kilpatrick reported 2 Cassin’s
Sparrows. On April 5 at DeGroot Road John Drummond reported Cassin’s
---On April 3 on Hanover Road, Gregg Goodrich reported 2 Cassin’s
Sparrows. On April 4 on Hanover Road, Cheri Phillips reported 2
Ladder-backed Woodpeckers and Diana Beatty reported Cassin’s Sparrow.
---On April 5 at 19250 Loop Rd Uldrickson Farm, Christine Alexander, Ginny
Bergstrom and Tom Johnson and his Field Guides tour reported Vermilion
---On April 5 at Hanover Fire Station, Jeannie Mitchell and John Drumond
reported Cassin’s Sparrow.
---On April 5 on Birdsall Road, Jim Merrit reported Curve-billed Thasher.
---On April 5 at Blair Bridge OS, Joy Lake reported Broad-tailed
---On April 6 on Sanborn Rd near Yoder, David Tonnessen reported 4 McCown’s
Longspur and Vesper Sparrow.
---On April 7 on Loop Road, Riley Morris reported 2 Curve-billed Thrashers.
---On April 76 on S Meridian Road Hanover Rd to Pueblo County Line, Roger
Massey, reported Ladder-backed Woodpecker and Vesper Sparrow.

---On April 2, SeEtta Moss reported Black Phoebe at Florence River Park,
MacKenzie Ave Bridge in Canon City, Sell’s Lake in Canon City.
---On April 3, SeEtta Moss reported 2 Eastern Phoebe at Tunnel Drive Rd in
Canon City, and 2 Eastern Phoebe at Sell’s Lake Trailhead to Canon City
---On April 7 at Brush Hollow, Cheryl Teuton and Norm Erthal reported basic
plumaged Pacific Loon; Erthal reported Clark’s Grebe and Chihuahuan Raven;
DeBoer reported Curve-billed Thrasher.
---On April 7 at Canon City Valco Pond, Jerry DeBoer reported 4
Violet-green Swallows and Eastern Phoebe.

---On April 3 at Ponds near Rifle Garfield Airport (view from road), JoAnn
Riggle reported 2 Snow Geese.

---On April 7 on Hwy 14 S of Coalmont, Mike Buccieri reported Swainson’s

---On April 3 at Wheat Ridge Greenbelt Prospect Park and Lake, Tuesday
Birders and Matt Clark reported 2-3 Lesser Yellowlegs and 100 Sandhill
Cranes. On April 4 at Wheat Ridge Greenbelt Prospect Park and Lake, Ginny
Bergstrom reported 3 Lesser Yellowlegs.
---On April 3 at Bear Creek Lake Park at Pelican Point, Mark Chavez and
Myron Gerhard reported Vesper Sparrow. On April 6 at Bear Creek Lake Park,
Mark Chavez reported American Pipit.
---On April 4 on Kipling going north, north of Ridge Rd, Anne Price
reported Swainson’s Hawk.
---On April 5 at Ken Caryl Cathy Johnson Trail, David Suddjian reported
Green-tailed Towhee.
---On April 7 at Chatfield SP, Susan Blansett reported 6 Violet-green
Swallows flying over the South Platte River.
---On April 7 at Maxwell Falls Lower Trail, Shayna Wieferich reported
Northern Goshawk and 2 Sandhill Cranes.
---On April 7 at Ralston creek trail thru west Woods Golf Course, John
Shunk reported Greater White-fronted Goose.
---On April 7 at Coors Ponds, Bruce Snyder reported Red-necked Grebe.

---On April 3 at Pastoroius Reservoir, Jason St. Pierre reported Least
Sandpiper. On April 6 at Pastorius Reservoir, Susan Allerton reported
Least Sandpiper and Great Egret; Ryan Votta reported Great Egret.

---On April 5 at Arapahoe Bend NA Rigden Reservoir (Strauss Cabin Lake),
Walter Wehtje reported 4 Barn Swallows and 2 Cliff Swallows. On April 6
at Arapahoe Bend NA Rigden Reservoir (Strauss Cabin Lake), Lori Zabel
reported Barn Swallow, 2 Vesper Sparrows, and 12 American Pipits. On April
7 at Arapahoe Bend NA Rigden Reservoir (Strauss Cabin Lake), Christine and
Richard Sparks, John Shenot, Brandon Nooner, Heather Shirley, and Eva
Matthews Lark reported 20 Sandhill Cranes, Violet-green Swallow, Northern
Rough-winged Swallow, Bank Swallows, Cliff Swallows, and Barn Swallows.
---On April 5 at Lee Martinez Park, Ethan Kistler reported 125 Turkey
Vultures from 0900 and Gray Catbird.
---On April 7 at CSU Environmental Learning Center riparian area upstream
of dam, Lori Zabel reported Eastern Phoebe.
---On April 7 at Bobcat Ridge NA, Skyler Bol reported Sagebrush Sparrow,
and Lincoln’s Sparrow.

---On April 6 on CR S near Karval, David Tonnessen reported American Pipit
and 8 Chestnut-collared Longspur.
---On April 6 on CR T near Karval, David Tonnessen reported 14 Mountain
Plover and Mountain Bluebird.
---On April 6 in Karval (town), David Tonnessen reported Hermit Thrush.
---On April 7 at Matthews-Reeser Bird Sanctuary, Ethan Kistler reported
Great Egret.

---On April 7 at Horsethief Canyon SWA, Carol Ortenzio and Katey Buster
reported Black Phoebe.
---On April 6 at Highline Lake SP, Kathleen McGinley and Mike Henwood
reported White-faced Ibis and 2 Sandhill Cranes.
---On April 6 at Brewster Ridge, Mike Henwood reported 5 Long-billed Curlew.
---On April 6 on old Us Hwy 6 & 50 2 8/10 Rd N, Mike Henwood and Kathleen
McGinley reported Burrowing Owl.
---On April 7 at Shiprock Pond, Nic Korte reported 3 White-faced Ibis.

---On April 5 at West Fork Rd, Ben Bailey reported 2 Turkey Vultures. West
Fork Rd is at mm158 on north Hwy 160.

---On April 5 at Moffat County Road Dept Ponds, John Vaderpoel reported
Great Egret.

---On April 5 at Totten Lake, Glenn Dunmire reported 2 Sandhill Cranes and
6 Franklin’s Gulls.
---On April 5 at Centennial Park pond in Cortez, Glenn Dunmire reported
pair of Wood Ducks.

---On April 6 at Holbrook Reservoir, Tom Johnson and his Field Guides
Grouse Tour reported Little Blue Heron, 2 Tree Swallows, 2 Bank Swallows,
and 6 Barn Swallows. On April 7 at Lake Holbrook east side outflow, Janeal
Thompson reported Little Blue Heron.
---On April 7 at Rocky Ford Dike, Steve Mlodinow reported 30 Tree Swallows,
2 Bank Swallows, 80 Barn Swallows, and 8 Cliff Swallows.
---On April 7 at Rocky Ford SWA Ryans Ponds, Steve Mlodinow reported 2
Eastern Phoebe, 2 Mountain Chickadees and Lincoln’s Sparrow.

---On April 4 at Northgate, Jane Stulp reported 2 Greater White-fronted

---On April 4 at Monte Vista NWR, Dale Pate reported 2 White-faced Ibis and
400 Sandhill Cranes.

---On April 4 at The Terraces, Eric Hynes reported 1 Gray-crowned
(Hepburn’s) Rosy-Finch, 4 Gray-crowned Rosy-Finch, 6 Black Rosy-Finch, and
140 Brown-capped Rosy-Finch.
---On April 6 at Hwy 145 and 44Z S Road, George Steele reported Snow Goose.

---On April 4 at Prewitt Reservoir, Norm Erthal reported Glaucous Gull.

---On April 7 at ponds west of CR 41 N of CR 46, Sharon Kay reported Great
Egret, 3 Black-necked Stilits, and 12 Sandhill Cranes across the road.
---On April 7 at CR 1376 W of CR 105, James Holmes reported Sharp-tailed
Grouse, Savannah Sparrow, and 8 Chestnut-collared Longspurs.
---On April 7 at CR 111 and CR 134, James Holmes reported 3 Sharp-tailed
---On April 7 at Briggsdale (town) at corner of Main and 5th Ave, James
Holmes reported Harris’s Sparrow.
---On April 7 at Clark Lake, James Holmes reported 4 Ross’s Geese, and 4
Greater White-fronted Geese.
---On April 7 at Behren Reservoir area, Renee Casias and David Dowell
reported Least Sandpiper.
---On April 7 at Crow Valley Campground, David Dowell and Georgiah Hartman
reported Hermit Thrush and 2 Lincoln’s Sparrows.
--- On April 7 at CR 136 and CR 111 Georgiah Hartman reported Sharp-tailed
Grouse; at CR 111 and CR 134, Matt Clark reported 2 Sharp-tailed Grouse.

---On April 7 at Wray, Bill Kaempfer reported Chipping Sparrow.

DFO Field Trips:
The DFO Field Trip for Sunday, April 8 will be to Cherry Creek SP Wetlands
Loop led by Karen von Saltza and Bill Wuerthle (kvonsaltza AT;
303-941-4881) Meet at 0800 at Prairie Loop lot in Cherry Creek SP. From
either park entrance, followLake View Rod to the Prarie Loop that is
locataed at the south rim of the reservoir. State Parks pass or day pass
This is a half day of walking that passes through most of the important
habitats found in the park over a distance of about 3.5 miles. Trails
could be slippery or muddy. Bring water and snacks; lunch is optional.
Beginning birders are welcome. Register online or contact leader.

The DFO Field Trip for Monday, April 9 will be to Southwest Metro Area
Ponds and Lakes led by David Suddjian (dsuddjian At;
831-713-8659) This trip is FULL.

Good Birding,
Joyce Takamine

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