Compiler: Joyce Takamine
Date: April 2, 2018
e-mail: RBA AT cobirds.org
This is the Rare Bird Alert forMonday, April 2 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)
Greater White-fronted Goose (*Jefferson,*Weld)
Wood Duck (Summit)
White-winged Scoter (Arapahoe)
Barrow's Goldeneye (Arapahoe, San Miguel)
Ring-necked Pheasant (Boulder, Weld)
Sharp-tailed Grouse (*Weld)
Red-necked Grebe (Pueblo)
White-winged Dove (*Weld)
Greater Roadrunner (El Paso)
White-throated Swift (Larimer, Pueblo)
Virginia Rail (Chaffee)
Sandhill Crane (Boulder, Rio Grande, Saguache, *Weld)
Black-necked Stilt (Weld)
Mountain Plover (El Paso, Weld)
Long-billed Curlew (Weld)
Baird's Sandpiper (Weld)
Long-billed Dowitcher (El Paso, *Mesa)
Spotted Sandpiper (Arapahoe, El Paso)
Lesser Yellowlegs (Boulder, Denver *Douglas, El Paso, Pueblo,Weld)
Greater Yellowlegs (Boulder, El Paso, Pueblo)
Bonaparte's Gull (Boulder, Larimer, Pueblo)
Franklin's Gull (Larimer, Pueblo, Weld)
California Gull (Douglas, Mesa)
Iceland Gull (El Paso, Pueblo)
YELLOW-BILLED LOON (Pueblo)
American White Pelican (Douglas)
Snowy Egret (*Adams, *Denver)
Turkey Vulture (Douglas, *Pitkin)
Osprey (Boulder, *Mesa, Pueblo, Weld)
Northern Goshawk (Jefferson, Larimer, Weld)
Red-shoulder Hawk (*Larimer)
Swainson's Hawk (*Weld)
Burrowing Owl (*El Paso, *Jefferson, *Weld)
Williamson's Sapsucker (Jefferson)
Red-napped Sapsucker (Douglas)
Ladder-backed Woodpecker (*El Paso)
Black Phoebe (*Mesa, Pueblo)
Eastern Phoebe (*Boulder, Douglas, Jefferson, Pueblo)
Vermilion Flycatcher (*El Paso)
Chihuahuan Raven (Fremont, *El Paso)
Tree Swallow (Boulder, Broomfield, Larimer, Pueblo)
Violet-green Swallow (Pueblo)
Bank Swallow (Larimer, Pueblo)
Cliff Swallow (Boulder, *Larimer, Pueblo, Weld)
Barn Swallow (Adams, Boulder, *Broomfield, Larimer, Pueblo, Weld)
Mountain Chickadee (Weld)
Bushtit (Weld)
Golden-crowned Kinglet (Weld)
Eastern Bluebird (*Weld)
Curve-billed Thrasher (*El Paso)
Brown Thrasher (*Baca)
Sage Thrasher (*Weld)
Bohemian Waxwing (*Clear Creek)
Northern Mockingbird (*Baca, Broomfield, El Paso)
Gray-crowned Rosy-Finch (San Miguel)
Black Rosy-Finch (San Miguel)
Brown-capped Rosy-Finch (San Miguel)
Common Redpoll (Boulder, Summit)
Red Crossbill (*Adams, Jefferson, Larimer)
Cassin's Sparrow (*El Paso)
Black-throated Sparrow (Otero)
Sagebrush Sparrow (*Boulder, Douglas, Jefferson)
Savannah Sparrow (Douglas, Jefferson, Mesa, Pueblo, Saguache, *Weld)
Lincoln's Sparrow (Boulder, Broomfield, Douglas, El Paso, Jefferson, Larimer, Mesa, Saguache, Summit)
Harris's Sparrow (*Denver, El Paso, Pueblo)
Yellow-headed Blackbird (Montrose)
EASTERN MEADOWLARK (*Weld)
Brown-headed Cowbird (Boulder, Broomfield, Pueblo,*Weld, Yuma)
Rusty Blackbird (Larimer)
Common Yellowthroat (Douglas)
Pine Warbler (Larimer)
ADAMS COUNTY:
---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 April 1 at Lowell Ponds (Clear Creek Valley Park), Gwen Moore reported Snowy Egret.
---On March 31 at Barr Lake Boat Ramp area, Heather and Riley Morris reported Barn Swallow.
---On April 1 at East Lake Sores Park, Brian Genge reported 15 Red Crossbills.
ARAPAHOE COUNTY:
---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.
BACA COUNTY:
---On April 1 at Springfield Water Treatment Plant, Tony Leukering reported Brown Thrasher and Northern Mockingbird.
BOULDER COUNTY:
---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 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 April 1 at Boulder Reservoir Complex, Peter Burke 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 April 1 on White Rocks Trail, Ron Podhajsky reported Sagebrush Sparrow.
---On March 31 at Boulder Creek and 75th St. Dan Zmolek and Leslie S reported Lincoln's Sparrow; Norm Lewis reported Eastern Phoebe. On April 1 at Boulder Creek and 85th St, Peter Burke reported Eastern Phoebe.
BROOMFIELD COUNTY:
---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 April 1 at Plaster Reservoir, Matt Hofeditz reported Barn Swallow.
CLEAR CREEK COUNTY:
---On April 1 while snowshoeing up Guanella Pass, Glenn Walbek reported 14 Bohemian Waxwing about halfway up at about 11,300 ft; Christian Hagenlocher reported 18 Bohemian Waxwings.
DENVER COUNTY:
---On March 30 at First Creek at DEN OS, Cheri Phillips reported Harris's Sparrow. On April 1 at First Creek at DEN OS, John Breitsch and Jeff Dawson reported Harris's Sparrow.
---On March 31 at Windsor Lake, Christina Yeagley reported Lesser Yellowlegs.
---On April 1 at Washington Park, Joe Roller reported Snowy Egret on Grasmere Lake.
---On April 1 at Westerly Creek Park, Jason Bidgood reported Harris's Sparrow bet Creek and Beehler at about 23rd Ave.
DOUGLAS COUNTY:
---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 April 1 at Park Regional Park (aka Salisbury Equestrian Park), Cynthia Kristensen reported Lesser Yellowlegs.
EL PASO COUNTY:
---On March 29 at Hanover Fire Station Eric Page and Tanja Britton reported Cassin's Sparrows and Curve-billed Thrasher.
---On March 31 on Hanover Road, Kevin Ash reported 4 Cassin's Sparrows. On April 1 on Hanover Rd, Ginny Bergstrom reported Ladder-backed Woodpecker, Chihuahuan Raven, and Curve-billed Thrasher; Robb Hinds reported 5 Burrowing Owls and 7 Curve-billed Thrashers; Roger Masey reported Cassin's Sparrow and Curve-billed Thrasher.
---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 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 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 April 1 at Hanover Fire Station, Bill Kosar found m Vermilion Flycatcher and many other birders were able to see it. Brandon Percival also reported Cassin's Sparrow and Mel and Jeanne Golf reported Curve-billed Thrasher.
JEFFERSON COUNTY:
---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 April 1 at Arvada Blunn Reservoir, Steven Snyder reported Burrowing Owl near 64th Ave entrance.
---On April 1 on West Woods Golf Course, Steven Snyder reported Greater White-fronted Goose.
LARIMER COUNTY:
---On March 30 at Wild Horse Birdfeeder, John Reichhardt reported Pine Warbler.
---On March 27 at North Shields Ponds NA, Dave Leatherman reported Lincoln's Sparrow and 5 Red Crossbill type 2.
---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 April 1 at Running Deer and Cottonwood Hollow NA, Skyler Bol reported Cliff Swallow
---On April 1 at Colorado Welcom Center and Boxelder Creek, Robert Beauchamp reported Red-shouldered Hawk.
MESA COUNTY:
---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 April 1 on Colorado River Trail Audubon Section, Katey Buster reported Black Phoebe at Phoebe Rock.
---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 Phoebe.
---On April 1 at 23 ¼ Rd pond, Lee Stigen reported 2 Long-billed Dowitchers.
---On April 1 at Audubon Sanctuary, Lee Stigen reported Osprey.
MONTROSE COUNTY:
---On March 31 at Bridges Drive in Montrose (town), Betty Fenton reported Yellow-headed Blackbird.
OTERO COUNTY:
---On March 30, Glenn Walbek reported Black-throated Sparrow.
PITKIN COUNTY:
---On April 1 on Owl Creek Ranch Rd, Catherine Hagen reported Turkey Vulture.
PUEBLO COUNTY:
---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.
RIO GRANDE COUNTY:
---On March 28 at Monte Vista NWR, John Rawinski reported 3 – 5,000 Sandhill Cranes.
SAGUACHE COUNTY:
---On March 31 at Russell Lakes SWA, John W Cobb reported 130 Sandhill Cranes, Savannah Sparrow, and Lincoln's Sparrow.
SAN MIGUEL COUNTY:
---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 Goldeneye.
SUMMIT COUNTY:
---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 Sparrow.
---On March 31 at Bills Ranch area, Jack and Ryan Bushong reported Common Redpoll.
WELD COUNTY:
---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 April 1 on CR 124 from CR 111 east, Steve Mlodinow reported 9 Sharp-tailed Grouse.
---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 April 1 at Union Reservoir, Gene Rutherford reported White-winged Dove and Brown-headed Cowbird.
---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 April 1 in Pawnee NG CR 136 east of CR 99 Cheri Phillips reported 19 Sharp-tailed Grouse.
---On March 30 at Vista Ridge Bike Path, David Blue reported Mountain Chickadee.
---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 April 1 at Behrens Reservoir, Gene Rutherford reported 4 Greater White-fronted Geese.
---On March 31 at Steward's Pond, Seemala Das Majumder and DFO Field trip reported Long-billed Curlew.
---On April 1 at Grover, David Ely reported 34 Sandhill Cranes and 4 Eastern Bluebirds.
---On April 1 on CR 44 between CR 41 and CR 43, David Ely reported Swainson's Hawk.
---On April 1 on Pawnee NG Murphy's Pasture Auto tour Stops 2 and 3, Cheri Phillips reported Burrowing Owl, Sage Thrasher and EASTERN MEADOWLARK.
---On April 1 at Lower Latham, Steve Mlodinow, Riley, and Heather Morris reported Savannah Sparrow.
---On April 1 at Clark Lake, Steve Mlodinow reported 6 Greater White-fronted Geese.
DFO Field Trips:
The DFO Field Trip for Tuesday, April 3 is to the Ken Caryle Valley Area led by David Suddjian (dsuddjian AT gmail.com; 831-713-8659) This trip is full.
The DFO Field Trip for Wednesday, April 4 will be Front Range Owling led by David Suddjian (dsuddjian AT gmail.com; 831-713-8659) This trip is full.
The DFO Field Trip for Thursday, April 6 will be to Fountain Creek Regional Park led by Diane Roberts (Samatha576 AT aol.com; 720-278-9025) This trip is full.
Good Birding,
Joyce Takamine
Boulder
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