Date: 4/1/18 3:04 am
From: Joyce Takamine <jabirujt...>
Subject: [cobirds] Colorado Rare Bird Alert, 1 April 2018
Compiler: Joyce Takamine
Date: April 1, 2018
e-mail: RBA AT

This is the Rare Bird Alert for Sunday, April 1 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)
Wood Duck (*Summit)
Greater Scaup (Jackson)
White-winged Scoter (*Arapahoe)
Barrow’s Goldeneye (*Arapahoe, San Miguel)
Ring-necked Pheasant (Boulder, *Weld)
Sharp-tailed Grouse (Weld)
Red-necked Grebe (Larimer, *Pueblo)
Greater Roadrunner (El Paso)
White-throated Swift (El Paso, Larimer, Pueblo)
Virginia Rail (Chaffee)
Sandhill Crane (*Boulder, Rio Grande, *Saguache)
Black-necked Stilt (*Weld)
Mountain Plover (El Paso, Weld)
Long-billed Curlew (*Weld)
Baird’s Sandpiper (*Weld)
Long-billed Dowitcher (*El Paso, Kit Carson, Rio Grande)
Spotted Sandpiper (Arapahoe, *El Paso)
Lesser Yellowlegs (*Boulder, *Denver *El Paso, Pueblo,*Weld)
Greater Yellowlegs (Boulder, El Paso, *Pueblo)
Bonaparte’s Gull (Boulder, Jackson, *Larimer, Pueblo)
Franklin’s Gull ( Jackson, Larimer, Pueblo, Weld)
California Gull (Douglas, Mesa)
Iceland Gull (El Paso, Pueblo)
American White Pelican (Douglas)
Snowy Egret (*Adams)
Turkey Vulture (Douglas)
Osprey (*Boulder, *Pueblo, *Weld)
Northern Goshawk (*Jefferson, Larimer, Weld)
Williamson’s Sapsucker (Jefferson)
Red-napped Sapsucker (Douglas, El Paso, La Plata, Montezuma)
Ladder-backed Woodpecker (*El Paso)
Black Phoebe (*Mesa, Pueblo)
Eastern Phoebe (*Boulder, *Douglas, *Jefferson, Larimer, Pueblo)
Say’s Phoebe (Boulder)
Chihuahuan Raven (Fremont)
Tree Swallow (*Boulder, Broomfield, Larimer, Pueblo)
Violet-green Swallow (*Pueblo)
Bank Swallow (Larimer, Pueblo)
Cliff Swallow (Boulder, Larimer, Pueblo, Weld)
Barn Swallow (**Adams, *Boulder, Larimer, Pueblo, *Weld)
Mountain Chickadee (*Weld)
Bushtit (*Weld)
Golden-crowned Kinglet (*Weld)
Curve-billed Thrasher (El Paso)
Sage Thrasher (Arapahoe)
Northern Mockingbird (Broomfield, El Paso)
American Pipit (Summit)
Gray-crowned Rosy-Finch (San Miguel)
Black Rosy-Finch (San Miguel)
Brown-capped Rosy-Finch (San Miguel)
Common Redpoll (Boulder, *Summit)
Red Crossbill (Jefferson, Larimer)
Cassin’s Sparrow (*El Paso)
Black-throated Sparrow (Otero)
Sagebrush Sparrow (*Boulder, Douglas, Jackson, Jefferson)
Savannah Sparrow (Douglas, Jefferson, Mesa, Pueblo, *Saguache, Weld)
Lincoln’s Sparrow (*Boulder, *Broomfield, Douglas, El Paso, Jefferson,
Larimer, Lincoln, Mesa, *Saguache, *Summit)
Harris’s Sparrow (Denver, El Paso, Pueblo)
Yellow-headed Blackbird (*Montrose)
Brown-headed Cowbird (*Boulder, *Broomfield, Pueblo, Yuma)
Rusty Blackbird (Larimer)
Common Yellowthroat (*Douglas)
Pine Warbler (Larimer)

---On March 30 at Big Dry Creek OS, David Ely reported Northern Mockingbird.
---On March 31 at Lowell Ponds (Clear Creek Valley Park), Lorraine Lanning
reported 2 Snowy Egret.
---On March 31 at Barr Lake Boat Ramp area, Heather and Riley Morris
reported Barn Swallow.


---On March 26 at Cherry Creek SP, Edward Donnan and Karen Drozda reported
Sage Thrasher.
---On March 28 on South Platte River from Union Ave south to footbridge,
Crystal Wilson reported Spotted Sandpiper.
---On March 29 at 26000 E. Quincy Ave, in Aurora, Cheri Phillips reported
Sage Thrasher.
---On March 30 at South Platte Reservoir, Ben Sampson reported White-winged
Scoter. On March 31 at South Platte Reservoir, Sheridan Samano and Tom
Bunker reported White-winged Scoter.
---On March 30 at South Platte Park C470 area, Ben Sampson reported 2 f
Barrow’s Goldeneyes. On March 31 at South Platte Park C470 area, Edward
Donnan reported 2 f Barrow’s Goldeneyes.

---On March 27 at Golden Ponds, David Dowell reported Eastern Phoebe and
Cliff Swallow; Luke Pheneger reported Osprey, Eastern Phoebe, and 5 Tree
Swallows. On March 28 at Golden Ponds Park, Dave Waltman reported Eastern
Phoebe. On March 29 at Golden Ponds Parks, Luke Pheneger reported Eastern
Phoebe and 13 Tree Swallows.
---On March 26 at Waneka Lake/Greenlee Preserve, Ted Floyd reported
Lincoln’s Sparrow.
---On March 26 at Greenlee Preserve in Lafayette, Ted Floyd reported 2
Greater Yellowlegs and Say’s Phoebe.
---On March 27 at NE corner of Kittredge Loop Drive on CU Boulder campus,
Nathan Pieplow reported Sagebrush Sparrow.
---On March 27 at Boulder Reservoir complex, Leslie S reported 2 Snow
Geese. On March 30 at Boulder Reservoir complex, Chris Brown, Dan Zmolek,
and Leslie S reported 2 Snow Geese.
---On March 29 at Meyers Gulch Trail, Tend, Hannah, and Andrew Floyd
reported Common Redpoll.
---On March 30 at Walden/Sawhill Ponds, Luke and Tracy Pheneger, John
Rutenbeck, Dan Zmolek, and Leslie S reported Osprey, 3 Greater Yellowlegs,
Lesser Yellowlegs, Tree Swallow, Brown-headed Cowbird. On March 31 at
Walden/Sawhill Ponds, Laura Steadman and Melissa Mezger reported 2 Osprey,
Lincoln’s Sparrow and Brown-headed Cowbird, Chuck Hundertmark and DFO Field
Trip reported 2 Osprey and 2 Barn Swallow.
---On March 30 at White Rocks Trail, Christian Nunes reported Ring-necked
Pheasant, Sagebrush Sparrow, and Lincoln’s Sparrow. On March 31 at White
Rock Trail, Peter Burke and several other birders reported Sagebrush
Sparrow and some reported Sandhill Crane.
---On March 31 at Boulder Creek and 85th St. Dan Zmolek and Leslie S
reported Lincoln’s Sparrow; Norm Lewis reported Eastern Phoebe.

---On March 29 at W 134th Place, Matt Hofeditz reported 2 Tree Swallows.
---On March 31 at Plaster Reservoir, David Ely reported Lincoln’s Sparrow
and Brown-headed Cowbird.

---On March 30 at First Creek at DEN OS, Cheri Phillips reported Harris’s
---On March 31 at Windsor Lake, Christina Yeagley reported Lesser

---On March 30 at Chatfield SP, Tom Gannon reported 3 Sagebrush Sparrows
hopping around Heronry Picnic Area parking lot. On March 31 at Chatfield
SP, Joey Kellner et al reported Eastern Phoebe. On March 31 at Chatfield
SP Plum Creek Delta, Matt Crooks reported Common Yellowthroat.
---On March 29 at Chatfield SP Model Airplane Field, Dale Pate and Cheri
Phillips reported Savannah Sparrow.
---On March 30 at Sedalia, Norm Lewis reported Red-naped Sapsucker.

---On March 29 at Hanover Fire Station Eric Page and Tanja Britton reported
Cassin’s Sparrows and Curve-billed Thrasher.
---On March 26 on Hanover road, Steve Brown reported 3 pairs of
Curve-billed Thashers. On March 29 on Hanover Road, Eric Plage and Tanja
Britton reported Ladder-backed Woodpecker, Curve-billed Thrasher and 10
Cassin’s Sparrows. On March 31 on Hanover Road, Kevin Ash reported 4
Cassin’s Sparrows.
---On March 29 at Chico Basin Ranch (fee area), Eric Plage reported Greater
Roadrunner, pair of Ladder-backed Woodpeckers, 2 Curve-billed Thrashers,
and 14 Cassin’s Sparrows.
---On March 26 at Garden of Gods Park, Steve Brown reported 2
White-throated Swifts.
---On March 26 at Rock Ledge Ranch, Monday Birders reported m Red-naped
Sapsucker. On March 28 at Rock Ledge Ranch, Tanja Britton reported 2
Lincoln’s Sparrows. On March 30 at Rock Ledge Ranch, Tanja Britton
reported Lincoln’s Sparrow.
---On March 26 at S Peyton Hwy and Hanover Road, Cathy Bondy and Christine
Hubbell reported 4 Curve-billed Thrashers.
---On March 27 at Sand Creek Trail – Dublin Blvd to E Woodmen Rd, Alan
Versaw reported Lincoln’s Sparrow.
---On March 28 at Clear Spring Ranch, Jim Merritt and Alan Ketcham reported
Lincoln’s Sparrow.
---On March 29 at Kettle Lakes, David Tonnessen reported 3 Lincoln’s
Sparrows. On March 30 at Kettle Creek Lakes, Del Nelson reported 2
Lincoln’s Sparrows.
---On March 29 at Ramah Reservoir SWA, Alan Versaw reported Long-billed
Dowitcher and 5 Greater Yellowlegs. On March 30 at Ramah Reservoir SWA,
Norm Lewis reported 4 Greater Yellowlegs. On March 31 at Ramah Reservoir
SWA, Alan and May-Lynne Ketcham reported Long-billed Dowitcher.
---On March 29 on Voyager Pkwy south of North Gate Blvd, Roger Massey
reported Lincoln’s Sparrow.
---On March 31 at Squirrel Creek Rd reservoir, Aaron Driscoll, Jim Merritt,
and David Tonnessen reported 2 Lesser Yellowlegs.
---On March 31 at Hanover Road Windmill Oasis, Aaron Driscoll reported
Ladder-backed Woodpecker.
---On March 31 at Fountain Creek Regional Park/ Willow Spring Road, Chris
McReynolds reported Spotted Sandpiper.

---On March 26 at Walden Reservoir, Sue Riffe, Danny Montalvo, and Joshua
Smith reported Greater Scaup and Sagebrush Sparrow; Montalvo and Smith also
reported Bonaparte’s Gull and 2 Franklin’s Gulls.
---On March 26 at Pole Mountain Lake, Danny Montalvo and Joshua Smith
reported Franklin’s Gull.

---On March 26 at Staunton SP, Hillary White reported Northern Goshawk.
---On March 28 at Deer Creek downstream of Grizzly Drive, David Suddjian
reported Eastern Phoebe.
---On March 28 at Buckhorn Road, David Suddjian reported m Williamson’s
Sapsucker and Red Crossbill.
---On March 28 at Chatfield SP wetlands, Myron Gerhard reported Sagebrush
Sparrow. On March 28 at Chatfield SP wetlands, Matt Crooks reported 2
Sagebrush Sparrows. On March 30 at Chatfield SP wetlands, Bill Eisele
reported Sagebrush Sparrow.
---On March 29 at Harriman Lake Park, Myron Gerhard reported Savannah
Sparrow and 3 Lincoln’s Sparrows.
---On March 31 at Waterton canyon from Waterton Rd to overhead pipes, Bez
Bezuidenhout reported Eastern Phoebe.
---On March 31 on Cub Creek Trail in Evergreen, Greg Levandoski reported
Northern Goshawk.

---On March 26 at Flager Reservoir SWA, Norm Lewis reported 2 Long-billed

---On March 26 at Animas River Trail –Huck Finn Pond and Hatchery area,
Ryan Votta reported m Red-naped Sapsucker.

---On March 30 at Wild Horse Birdfeeder, John Reichhardt reported Pine
---On February 28 at Fort Collins City Park and Sheldon Lake, Dave
Leatherman found Red-necked Grebe which was seen by several other birders.
On March 25 at Fort Collins City Park and Sheldon Lake, Dave Leatherman
and Janeal Thompson reported Red-necked Grebe.
---On March 26 at North Shields Pond NA, Eva Matthews reported Lincoln’s
Sparrow. On March 27 at North Shields Ponds NA, Dave Leatherman reported
Lincoln’s Sparrow and 5 Red Crossbill type 2.
---On March 26 at Oxbow NA, Christine Sparks reported Eastern Phoebe.
---On March 27 at Watson Lake Fish Hatchery, Dave Leatherman reported 3
White-throated Swift.
---On March 29 at Arapahoe Bend NA Rigden Reservoir (Strauss Cabin Lake),
Lori Zabel reported Bonaparte’s Gull, Franklin’s Gull, Tree Swallow, 4 Barn
Swallows, 8 Cliff Swallows, and 3 Lincoln’s Sparrows; Nick Komar reported 3
Bonaparte’s Gulls, 3 Franklin’s Gulls, and 3 Bank Swallows. On March 30 at
Arapahoe Bend NA Rigden Reservoir (Strauss Cabin Lake), David Wade reported
3 Bonaparte’s Gulls, 3 Franklin’s Gulls, 3 Tree Swallows, 2 Barn Swallows,
3 Cliff Swallows; Colby Plante reported 2 Bonparte’s Gulls, and 8
Franklin’s Gulls.
---On March 31 at Fossil Creek Reservoir NA West Blind, Jacy
Bernath-Plaisted reported Bonaparte’s Gull.

---On March 26 at Kinney Lake SWA, Norm Lewis reported Lincoln’s Sparrow.

---On March 27 at Grand Valley Audubon NC, Mike Henwood reported pair of
Black Phoebe near Phoebe Rock; at Connected Lakes bike path, David Price
reported 2 Black Phoebe; at Connected Lakes Audubon Section, Ronda Woodward
reported 2 Black Phoebe.
---On March 28 in Loma 11 8/10 Road from P ½ Rd to Q Rd, Mike Henwood
reported Savannah Sparrow.
---On March 30 at Grand Junction Wildlife Area, Mike Henwood and Katey
Buster reported Lincoln’s Sparrow.
---On March 31 at Horsethief Canyon SWA, David Price reported 2 Black

---On March 26 at Mesa Verde NP, Richard Beilfuss reported Red-naped

---On March 31 at Bridges Drive in Montrose (town), Betty Fenton reported
Yellow-headed Blackbird.

---On March 30, Glenn Walbek reported Black-throated Sparrow.

---On March 27 at Pueblo Reservoir in Northeast Corner by dam, Brandon
Percival, Van Truan, and Darth Aves reported YELLOW-BILLED LOON. On March
28 at Pueblo Reservoir in Northeast Corner by the dam, Brandon Percival and
Jamie Adams reported YELLOW-BILLED LOON; Brandon also reported the
following at Pueblo Reservoir: Black Phoebe, Eastern Phoebe, Barn Swallow,
Tree Swallow, Cliff Swallow, Savannah Sparrow, Brown-headed Cowbird,
Franklin’s Gull, Bonaparte’s Gull, and Harris’s Sparrow. On March 29 at
Pueblo Reservoir, Michael Shoop, Brandon Percival, and Bill Maynard
reported YELLOW-BILLED LOON in Northeast Corner in morning and JoAnn
Andrews reported YELLOW-BILLED LOON by Sailboard Launch area in the
afternoon; Darth Aves reported YELLOW-BILLED LOON back at Northeast Corner
in late afternoon; Percival also reported Eastern Phoebe, Cliff Swallow,
Barn Swallow and Tree Swallow at Pueblo Reservoir. On March 30 at Pueblo
Reservoir SWA on NW side, Brandon Percival reported Lesser Yellowlegs, 4
Greater Yellowlegs, 60 Tree Swallows, Cliff Swallow, 2 Barn Swallows, and
Bank Swallow and Bonaparte’s Gulls.
---On March 31 at Pueblo Reservoir SWA NW side, Brandon Percival reported a
breeding plumaged Red-necked Grebe and Violet-green Swallow; Robb Hinds
reported the grebe and 2 Osprey; Jim Merritt and David Tonnessen reported
grebe and Lesser Yellowlegs and Violet-green Swallow.

---On March 26 at Monte Vista NWRD, Scott Somershoe reported 4500 Sandhill
Cranes and Long-billed Dowitcher. On March 28 at Monte Vista NWR, John
Rawinski reported 3 – 5,000 Sandhill Cranes.

---On March 31 at Russell Lakes SWA, John W Cobb reported 130 Sandhill
Cranes, Savannah Sparrow, and Lincoln’s Sparrow.

---On March 27 at The Terrance at Mountain Village, Eric Hynes reported 2
Gray-crowned (Hepburn’s) Rosy-Finch, 4 Gray-crowned Rosy-Finch, 10 Black
Rosy-Finch, and 200 Brown-capped Rosy-Finch.
---On March 30 at Miramonte Reservoir, George Steele reported Barrow’s

---On March 27 at Silverthorne Water Treatment Plant, JoAnn Riggle reported
Wood Duck. On March 30 at Silverthorne Water Treatment Plant, Phil Lyon
reported pair of Wood Ducks. On March 31 a Silverthorn Water Treatments
Plan, Jack and Ryan Bushong reported pair of Wood Ducks and Lincoln’s
---On March 26 at Soda Creek Inlet to Dillon Reservoir, Hank Taliaferro
reported American Pipit.
---On March 31 at Bills Ranch area, Jack and Ryan Bushong reported Common

---On March 27 at Glenmere Park, Shawn Mason reported 3 Bushtits and
Golden-crowned Kinglets. On March 31 at Glenmere Park, Sreemala Das
Majumder and DFO Field trip reported Golden-crowned Kinglet; Shawn Mason
reported 6 Bushtit and Mountain Chickadee.
---On March 28 at CR 134 east of CR 111, Sue Riffe reported 11 Sharp-tailed
Grouse. On March 28 at CR 111 between CR 128 and CR 124, Sue Riffe
reported Sharp-tailed Grouse.
---On March 26 at Union Reservoir, John Rutenbeck reported Osprey. On
March 27 at Union Reservoir, Steve Mlodinow reported 2 Osprey at nest, 3
Franklin’s Gulls. On March 31 at Union Reservoir, Gene Rutherford and
Steve Mlodinow reported Osprey.
---On March 27 at Firestone Gravel Pits (View from road), Steve Mlodinow
reported Barn Swallow. On March 30 at Firestone Gravel Pits (view from
road), Carl Starace reported Barn Swallow and 4 Cliff Swallows. On March
31 at Firestone Gravel Pits (View from road), Seemala Das Majumder and DFO
Field Trip reported Ring-necked Pheasant and 3 Barn Swallows.
---On March 28 about 1/10 mile S of Hwy 14 on east side of CR 79, Dave
Leatherman reported Mountain Plovers in a field.
---On March 30 in Pawnee NG CR 136 between CR 99 and CT 105, Christine
Alexander reported 2 Sharp-trailed Grouse.
---On March 30 at Vista Ridge Bike Path, David Blue reported Mountain
---On March 31 at CR 59 Wetlands, Shawn Mason reported Baird’s Sandpiper.
---On March 31 at Behrens Reservoir, Gene Rutherford reported 6
Black-necked Stilts, 3 Baird’s Sandpipers, and 2 Lesser Yellowlegs; Rene
Casias reported 8 Black-necked Stilits and 5 Lesser Yellowlegs.
---On March 31 at Steward’s Pond, Seemala Das Majumder and DFO Field trip
reported Long-billed Curlew.

DFO Field Trips:

Good Birding,
Joyce Takamine

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