Compiler:   Joyce Takamine
Date:        April 16, 2018
e-mail:      RBA AT

This is the Rare Bird Alert for Monday, April 16 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 (Arapahoe)
Ross’s Goose (*Fremont, *Kiowa)
Greater White-fronted Goose (*Fremont, Jackson, *Larimer, Prowers, Rio
Tundra Swan (Alamosa)
Mallard (Mexican intergrade) (Pueblo)
Greater Scaup (*Jackson, Montrose, Phillips)
White-winged Scoter (Pueblo)
Long-tailed Duck (Montezuma)
Barrow’s Goldeneye (Gunnison)
Red-breasted Merganser (*Kiowa, *Montrose)
Sharp-tailed Grouse (*Weld)
Red-necked Grebe (Jefferson)
Greater Roadrunner (*Kiowa)
Common Nighthawk (Pueblo)
White-throated Swift (Pueblo)
ANNA’S HUMMINGBIRD (Boulder, *Larimer)
Broad-tailed Hummingbird (Arapahoe, El Paso)
Virginia Rail (Chaffee)
Sandhill Crane (*Kiowa)
Black-necked Stilt (La Plata)
Snowy Plover (Alamosa, *Kiowa)
Mountain Plover (El Paso, *Kiowa)
Marbled Godwit (Boulder)
Baird’s Sandpiper (*Kiowa)
Least Sandpiper (*Kiowa, Larimer, Weld)
Pectoral Sandpiper (Jackson)
Semipalmated Sandpiper (Mesa)
Western Sandpiper (Jackson, La Plata, Mesa)
Solitary Sandpiper (Mesa)
Iceland Gull (*Kiowa, Larimer)
Caspian Tern (Mesa)
Forster’s Tern (Jackson)
Red-throated Loon (*Kiowa)
American White Pelican (Douglas)
American Bittern (Mesa)
Great Egret (*Kiowa)
Cattle Egret (Mesa)
White-faced Ibis (Boulder, *Kiowa)
Turkey Vulture (Douglas)
Northern Goshawk  (Larimer)
Rough-legged Hawk (*Denver, *Logan, *Weld)
Burrowing Owl (*Kiowa, Moffat)
Ladder-backed Woodpecker (El Paso)
Western Wood-Pewee (Boulder)
Eastern Phoebe (*Boulder, Douglas)
Vermilion Flycatcher (Pueblo)
Ash-throated Flycatcher (Arapahoe)
Western Kingbird (Adams, Arapahoe)
Violet-green Swallow (Adams, Archuleta, *Jefferson, *Weld)
Northern Rough-winged Swallow (Adams, Moffat)
Bank Swallow (Adams, Boulder, *Chaffee, El Paso, Larimer)
Cliff Swallow ( Boulder, Denver, El Paso, Larimer, Moffat)
Bushtit (Weld)
House Wren (Moffat, Pueblo)
Carolina Wren (Las Animas)
Blue-gray Gnatchatcher (Archuleta)
Golden-crowned Kinglet (*Denver)
Eastern Bluebird (*Weld)
Hermit Thrush (Larimer)
Curve-billed Thrasher (*El Paso, *Kiowa)
Brown Thrasher (*Weld)
Sage Thrasher (Boulder)
Northern Mockingbird (Broomfield, El Paso)
Bohemian Waxwing (*Clear Creek, Grand)
American Pipit (Jefferson, *Kiowa)
Red Crossbill (Arapahoe)
McCown’s Longspur (Yuma)
American Tree Sparrow (Boulder, Denver, *Logan)
Chipping Sparrow (Boulder, Larime, *Loganr)
Clay-colored Sparrow (Adams)
Brewer’s Sparrow (Yuma)
Vesper Sparrow (Adams, Archuleta, *Kiowa, Las Animas, Ouray)
Lark Sparrow (Ouray)
Sagebrush Sparrow (Boulder, Larimer)
Savannah Sparrow (Arapahoe, *Kiowa, *Logan)
Lincoln’s Sparrow (Adams, *Kiowa, *Logan)
Harris’s Sparrow (Denver, El Paso)
Brown-headed Cowbird (Chaffee, El Paso, Jefferson, *Kiowa, Yuma)
Northern Waterthrush (Boulder)
Common Yellowthroat (Arapahoe, *Chaffee)
Black-throated Gray Warbler (Montrose)
Northern Cardinal (Pueblo)

---On April 11 at Barr Lake SP boat ramp area, Danny Fritz reported 3
Clay-colored Sparrows.  On April 14 at Barr Lake SP, Ira Sanders reported 2
Northern Rough-winged Swallows.
--- On April 11 at Rocky Mountain Arsenal NWR, R Knapp reported Western
Kingbird.  On April 13 at Rocky Mountain Arsenal NWR Bluestem Loop Trail,
Jim Arnett reported Vesper Sparrow.
---On April 12 at McKay Lake, James McCall reported Lincoln’s Sparrow.  On
April 14 at McKay Lake, Matt Hofeditz reported Northern Rough-winged
Swallow, Violet-green Swallow, 2 Bank Swallow and Lincoln’s Sparrow.

---On April 11 at Blanca Wetlands, Ricky Martinez reported Tundra Swan and
4 Snowy Plovers.


---On April 13 at Cherry Creek SP Lake Loop, Cheri Phillips reported 2
Western Kingbirds.
---On April 11 at Littleton Cemetery, David Suddjian reported Broad-tailed
---On April 11 on High Line canal Trail – E Belleview to E Quincy (Blackmer
Lake area), Santiago Tabares reported 6 Red Crossbills.
---On April 12 at South Platte Park C470 area, Robert Folzenlogen, reported
m Common Yellowthroat.
---On April 12 at Progress Park, Edward Donnan reported 2 Savannah Sparrows.
---On April 12 at Big Dry Creek Trail—from Dry Creek Blvd to Arapahoe Blvd,
Mary O’Connor reported 9 Red Crossbills.
---On April 14 at Willow Creek Park, Cynthia Madsen reported 16 Red
Crossbills in NE Corner of park.
---On April 14 at Ketring Park and Lake, Edward Donnan reported
Ash-throated Flycatcher.

---On April 14 at Navajo SP and Reservoir, Susan Allerton, Brenda Wright,
and Coen Dexter reported Blue-gray Gnatcatcher, 3 Vesper Sparrows, and 3
Violet-green Swallows.

---On April 11 at Boulder Creek and 75th St, Cameron Boyd reported Eastern
Phoebe.  On April 12 at Boulder Creek and 75th St, Carl Bendorf, John
Rutenbeck, Mike Hensley reported Eastern Phoebe.  On April 14 at Boulder
Creek and 75th St, Christine Alexander Cheri Phillips, Renee Casias, and
Chris Brown reported Eastern Phoebe.  On April 15 at Boulder Creek and 75th
St, Ron Podhajsky, Tom Behnfield, Gwen Moore, and Art Hudak reported
Eastern Phoebe.
---On April 11 at University of Colorado South Campus Confluence Ponds and
Skunk Creek, Jack Ostrand reported Northern Waterthrush.
---On April 12 on IBM connector Trail, Ron Podhajsky reported Vesper
---On April 12 on Old Stain Vrain Road in Lyons, Carl Bendorf reported
Eastern Phoebe.
---On April 12 at Boulder Community Garden, Richard Trinkner reported
Chipping Sparrow.
---On April 12 at Eldorado Springs Alison Sheets reported ANNA’S
HUMMINGBIRD at her feeder.  On April 13 Willem Van Vliet and many other
birders reported ANNA’S HUMMINGBIRD at Eldorado Springs
---On April 13 at Boulder Reservoir Complex, David Dowell and Christian
Nunes reported Marbled Godwit; Dowell reported Sagebrush Sparrow.  On April
14 at Boulder Reservoir Complex, Paul  Barchilon and several other birders
reported Marbled Godwit; Andy Jordan reported Sage Thrasher.
---On April 13 at Erie Reservoir, Jack Bushong reported Bank Swallow and 2
Cliff Swallows.
---On April 13 at Lagerman Reservoir, Dan Zmolek and Leslie S reported
White-faced Iblis and Marbled Godwit which flew to ? Boulder Reservoir.
---On April 14 at Walden/Sawhill Ponds, David Tonnessen, Jim Merritt,
Leslie S and Chris Brown reported Bank Swallow and 3 Cliff Swallows.
---On April 14 at Boulder creek and 109th, Chris Brown reported Bank
---On April 14 at Hecla Lake, Bob Muckle reported 2 Western Wood-Pewee.
---On April 15 in 7400 block of N 49th St, Longmont, Maikel Wise reported 3
Eastern Phoebe.

---On April 14 at Mt Shavano Fish Hatchery, Luke Pheneger and Boulder
Audubon Field Trip reported Bank Swallow
---On April 12 at Buena Vista San Isabell NF, Christian Hagenlocher
reported 2 Brown-headed Cowbirds.
---On April 15 on CR 210 S of Hwy 50, Caleb Frome reported 2 Bank Swallows.
---On April 15 at Buena Vista Ice Pond (view from road), Christian
Hagenlocher reported Common Yellowthroat.

---On April 15 at Mount Evans Chicago Creek Road area, Ben Lagasa reported
36 Bohemian Waxwings.

---On April 14 at First Creek at DEN OS, Alison Hixon and John Breitsch
reported Harris’s Sparrow.
---On April 12 at Gun Club Road, S of E 112th Ave, Doug Kibbe reported
American Tree Sparrow.
---On April 12 at DIA Northeast, Doug Kibbe reported Rough-legged Hawk.
---On April 12 at Commerce City Hudson Road, Doug Kibbe reported
Rough-legged Hawk.  On April 15 on Hudson Road, Jeff Dawson reported
Rough-legged Hawk.
---On April 13 at Rocky Mountain Lake Park, Matt Gray reported 8 Cliff
---On April 15 at Denver Botanic Gardnes and Cheesman Park, Rebecca Laroche
reported 2 Golden-crowned Kinglets.

---On April 11 at Platte Canyon Reservoir, Christ Gilbert reported Eastern
---On April 11 at Chatfield SP – downstream of Kingfisher Bridge (E),
Cynthia Kirstensen reported Eastern Phoebe.
---On April 13 on Cherry Creek trail south from Walker Road, Urling Kingery
reported 2 Eastern Phoebe.

---On April 11 at Chico Basin Ranch, Tanja Britton reported Ladder-backed
Woodpecker and Curve-billed Thrasher.
---On April 10 at Sand Creek Trail – Dublin Blvd to E Woodmen Rd, Alan
Versaw reported  Brown-headed Cow bird.
---On April 11 at Hanover Fire Station, Tanja Britton reported Curve-billed
Thrasher and Brown-headed Cowbird.
---On April 13 at Memorial Park and Prospect Lake, Donna Kuhn, Donna
Pomeroy, and Jean Bickal reported Bank Swallow.
---On April 13 at Double Tree Hotel Pond, Gloria Nikolai reported Bank
Swallow and 2 Cliff Swallows.
---On April 14 at Sinton Ponds OS, David Tonnessen and Jim Merritt
reported  LUCY’S WARBLER.  On April 15 at Sinton Ponds OS, Steve Rash and
Robb Hinds and many other birders reported LUCY’S WARBLER at Sinton Ponds
---On April 15 at Loop Road, Andreas Winnem reported Curve-billed Thrasher.
---On April 15 at DeGroot Road, Andreas Winnem reported 2 Curve-billed

---On April 15 at Canon City Valco Pond, Joel and Dale Adams reported 6
Greater White-fronted Geese and Ross’s Goose.

---On April 14 on CO 125 W of Willow Creek Reservoir, Wesley Honoya
reported 61 Bohemian Waxwings.

---On April 14 at Blue Mesa Reservoir eastern End, Marcel Such and Megan
Miller reported 3  Barrow’s Goldeneyes (2m, 1f)

---On April 13 at Walden Reservoir, Kevin and Jerry DeBoer reported
Forster’s Tern and 2 Greater Scaup.  On April 14 at Walden Reservoir,
Michael O’Brien, Sean Walters, Jerry and Kevin DeBoer reported Greater
white-fronted Goose.   On April 15 at Walden Reservoir, Tresa Moulton
reported 2 Greater Scaup.
---On April 13 at Arapaho NWR, Kevin and Jerry DeBoer reported 4 Western
Sandpipers and 2 Pectoral Sandpipers.

--- On April 12 at Coors Ponds, Loch Kilpatrick reported Red-necked Grebe.
---On April 12 at Harriman Lake Park, Matt Clark and Susan Bonfiglio
reported Eastern Phoebe.  On April 12 at Harriman Lake Park, Myron Gerhard
reported 2 Brown-headed Cowbirds.  On April 14 at Harriman Lake Park, Jim
Arnett and Scott Somershoe reported Brown-headed Cowbird.
---On April 14 at Arvada Blunn Reservoir, Lorrain Lanning and Matt Clark
reported American Pipits.
---On April 15 at Clement Park in Littleton, Scott Somershoe reported 2
Western Kingbirds.

---On April 15 at Adobe Creek Reservoir (Blue Lake), Steve Mlodinow
reported Red-breasted Merganser, 2 American Pipits, Vesper Sparrow,
Savannah Sparrow, Lincoln’s Sparrow, and Brown-headed Cowbird.
---On April 15 at Neenoshe Reservoir, Steve Mlodinow reported Red-breasted
Merganser, 2 Ross’s Geese, Red-throated Loon, Great Egret, 85 Sandhill
Cranes, 3 Snowy Plovers, Semipalmated Plover, Mountain Plover, 8 Baird’s
Sandpiper, 23 Least Sandpiper, Iceland Gull, Greater Roadrunner,
Curve-billed Thrasher, and 10 Brown-headed Cowbirds.
---On April 15 at Upper Queens/Neeskah, Steve Mlodinow reported 4 American
Pipits, Lincoln’s Sparrow, Red-breasted Merganser, White-faced Ibis, 65
Sandhill Cranes, 101 Baird’s Sandpiper, 2 Least Sandpipers, Semipalmated
Sandpiper, 3 Burrowing Owls, Brown-headed Cowbird.

---On April 11 at Pastorius Reservoir, Susan Allerton reported 5
Black-necked Stilts.  On April 13 at Pastorius Reservoir, Susan Allerton
and Ryan Votta reported Black-necked Stilt; Ryan Votta reported Western
Sandpiper;  On April 14 at Pastorius Reservoir, Susan Allerton, Brenda
Wright, and Coen Dexter reported Black-necked Stilt and Western Sandpiper.

---On April 12 at Arapahoe Bend NA RIgden Reservoir (Strauss Cabin Lake),
Ken Duncan reported 3 Cliff Swallows and Lori Zabel reported Least
Sandpiper.  On April 13 at Arapahoe Bend NA, Nick Komar reported Iceland
(Thayer’s X Iceland) Gull and 5 Bank Swallows.
---On April 11 at North Shield Pond NA, Brad Biggerstaff reported Chipping
---On April 11 at Dixon Reservoir, Bill Krochuk and Ethan Kistler reported
Sagebrush Sparrow.
---On April 12 at 1721 Cottonwood Pt Dr in Fort Collins, Rachel Hopper
reported a f ANNA’S HUMMINGBIRD coming to her feeders.  Many birders were
able to see this bird thanks to Rachel.  On April 13 Rachel Hopper again
reported ANNA’s HUMMINGBIRD and several birders got to see it.  On April 14
Rachel Hopper reported ANNA’S HUMMINGBIRD; John Shenot, Kevin and Gail
Kiern, and Walter Wehtje saw the hummer.  On April 15 Rachel Hopper
reported that the ANNA’S HUMMINGBIRD continues to visit her feeders and
many birders got to see the bird.
---On April 13 at Oak and Grant in Fort Collins, Georgia Doyle reported
Hermit Thrush.
---On April 15 at Warren Lake in Fort Collins, Bob Righter reported 30
Greater White-fronted Geese flying south.

---On April 10 at Cottonwood Canyon, Michael O’Brien and VENT Grouse Tour
reported Vesper Sparrow and Carolina Wren.

---On April 15 at Jumbo Reservoir, Diane Roberts reported Rough-legged
Hawk, 2 American Tree Sparrows, 2 Savannah Sparrows, Lincoln’s Sparrow, and
Chipping Sparrow.

---On April 12 at Ela Wildlife Sancutary, Mike Henwood, Kathleen McGinley,
and Carol Ortenzio reported Solitary Sandpiper; Mark and Denise Vollmar
reported 3 Semipalmated Sandpipers.
---On April 13 at Highline Lake SP, Denise and Mark Vollmar reported
Caspian Tern.
---On April 13 Redlands Parkway Ponds, Denise and Mark Vollmar reported 3
Semipalmated Sandpipers; Mike Henwood reported 2 Semipalmated Sandpipers
and Western Sandpiper.
---On April 14 at Connected Lake SP, Nic Korte and group reported American
---On April 14 at Grand Valley Audubon Nature Center, Diane Trappet  and
Mike Henwood reported American Bittern.
---On April 14 at 10 Rd Hudson Ranch Ponds, David Price and Hank Schoch
reported Cattle Egret.
---On April 14 Mack Mesa Airport to Highline Lake SP, Mike Henwood reported
4 Solitary Sandpipers.

---On April 9 Dinosaur National Monument Canyon Area Visitor Center, Kenny
Frisch photographed a CALIFORNIA QUAIL a first time in Colorado.  On April
13 at Dinosaur National Monument Canyon Area Visitor Center, Joey, Kellner,
Kathy Mihm Dunning, Peter Gent, and Maggie Boswell reported CALIFORNIA
QUAIL.  On April 14 at Dinosaur National Monument Canyon Area Visitor
Center, Bez Bezuidenhout reported CALIFORNIA QUAIL.  On April 15 at
Dinosuar National Monument Canyon Area Visitor Center, Tim Smart and Dean
Shoup reported CALIFORNIA QUAIL.
---On April 12 at Dinosaur NM Echo Park, Wolfe Repass reported 2 House
---On April 13 at Bitter Bush SWA, Joey Kellner and Kathy Mihm Dunning
reported 2 Burrowing Owls.

---On April 13 at Dolores Ponds (wastewater plant area), Coen Dexter and
Brenda Wright reported Long-tailed Duck.

---On April 15 at Otter Pond,  Betty Fenton reported Red-breasted
Merganser.  On April 12 at Otter Pond, Coen Dexter and Brenda Wright
reported Red-breasted Merganser.
---On April 11 on Lower Nucla – Delta Rd, Coen Dexter and Brenda Wright
reported ad m Black-throated Gray Warbler.

---On April 12 at Ridgway Reservoir and SP, Coen Dexter and Brenda Wright
reported 2 Vesper Sparrows and Lark Sparrow.

---On April 12 at Haxtun Sewage Ponds, Michael O’Brien and VENT Grouse Tour
reported Greater Scaup.

---On April 11 at Northgate, Jane Stulp reported 3 Greater White-fronted

---On April 12 at Runyon Lake, Mark Yeager reported Vermilion Flycatcher.
---On April 14 at Pueblo Reservoir  Rock Canon below dam N or river, David
Dowell and Brandon Percival reported Mallard (Mexican intergrade) and 3
House wrens; Diana Beatty reported Common Nighthawk.
---On April 14 at Pueblo Reservoir, Sailboard Area, Diana Beatty reported
Northern Cardinal.
---On April 14 at Lake Beckwith in Colorado City, David Dowell reported
White-winged Scoter.

---On April 13 at Kenney Reservoir, Joey Kellner and Kathy Mihm Dunning
reported Cliff Swallow and 2 Northern Rough-winged Swallows.

---On April 11 at CR 59 Wetlands Shawn Mason reported  6 Least Sandpipers.
---On April 14 at Glenmere Park in Greeley, Shawn Mason reported 2 Bushtits.
---On April 15 at CR 134 W of CR 135, Robert Beauchamp reported 8
Sharp-tailed Grouse and Rough-legged Hawk.
---On April 15 on CR 107 must past O-9 missile silo, Shawn Mason reported 3
Sharp-tailed Grouse.
---On April 15 on CR 115 N of CR134, Robert Beauchamp reported Rough-legged
---On April 15 on CR 130 W of CR 105, Robert Beauchamp reported
Sharp-tailed Grouse and Rough-legged Hawk.
---On April 15 at Cozzens Lake, Gene Rutherford reported Western Kingbird.
---On April 15 at Loloff Reservoir, Kevin and Jerry DeBoer reported
Rough-legged Hawk.
---On April 15 on CR 104 E of CR 57, Lyle Hamilton reported 2 Eastern
---On April 15 at Crow Valley CG, Shawn Mason reported Brown Thrasher.

---On April 13, US 385 south of CR 14, Sue Riffe reported Brewer’s Sparrow
and McCown’s Longspur.

DFO Field Trips:
The DFO Field trip for Tuesday/Wednesday April 17 – April 18 will be to
Southeastern Colorado led by David Suddjian (dsuddjian AT;
831-713-8659).  Directions:  Meet at RTE Lincoln Station Park and Ride,
4681 Station Way, Lone Tree, Co 80124.
     Two day trip full of hopes and maybe surprises.  Focus will be on
shorebirds and other waterbirds.  This trip will visit a number of
locations in Otero, Bent, Kiowa, Prowers, and maybe even Baca Counties.
Day 1 will likely focs on sites in western portion and Day 2 in estern
portion.  Overnight at Lamar on 4/17.  Participants are responsible for
carpool arrangements in advance and all lodging.  More details available
from leder.  Register online or contact leader.

The DFO Field Trip for Saturday , April 21 will be to McCabe Meadows
Trailhead led by Wendy Wibbens & Sue Summers (wibbwj AT;
303-330-1175)  This trip is FULL.

The DFO Field Trip for Sunday, April 22 will be to First Creek at RM
Arsenal led by Patrick O’Driscoll (patodrisk AT;
303=885-6955(cell)).  This trip is FULL.

The DFO Field Terip for Monday, April 23 will be to Aurora Reservoir and
Cherry Creek SP led by David Suddjian (dsuddjian AT;
831-713-8659).  This trip is FULL.

Good Birding,
Joyce Takamine

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