Black Scoter (Arapahoe, Broomfield*, Douglas, Jefferson*)
White-winged Scoter (Larimer)
Long-tailed Duck (Larimer*)
Red-necked Grebe (Arapahoe*, Boulder)
BROAD-BILLED HUMMINGBIRD (Mesa)
AMERICAN GOLDEN-PLOVER (Bent)
Dunlin (Routt*, Weld)
Red-throated Loon (Kiowa)
Pacific Loon (Adams, Denver*, Jefferson, Weld)
Little Blue Heron (Boulder)
Short-eared Owl (Adams)
Wood Thrush (Boulder)
Gray-crowned Rosy-Finch (Arapahoe)
Chestnut-collared Longspur (Park*)
Black-throated Sparrow (Fremont)
Golden-crowned Sparrow (El Paso)
Rusty Blackbird (Douglas, Larimer*)
Magnolia Warbler (Arapahoe)
Blackburnian Warbler (Boulder)
Pine Warbler (Jefferson)
Black-throated Green Warbler (Boulder, Jefferson)
—On October 26 a Pacific Loon was reported at Barr Lake SP (near the dam) by Ira Sanders.
--On October 28 a Short-eared Owl was reported along Wildlife Drive within the Rocky Mountain Arsenal by Raymond Sperger.
—On October 27 a Gray-crowned Rosy-Finch was reported at Cherry Creek SP -Lake Loop by Diane Roberts.
—On October 27 a Black Scoter was reported at Cherry Creek SP-Lake Loop. (5) were first reported on October 24 by Diane Roberts.
--On October 31 a Red-necked Grebe was reported amid a group of Western Grebes at Cherry Creek SP by Glenn Walbek.
--On October 31 a Trumpeter Swan and (2) Tundra Swans were reported at Aurora Reservoir by Diane Roberts.
—On October 26 an AMERICAN GOLDEN-PLOVER was reported at Adobe Creek Reservoir (Blue Lake) by Steve Mlodinow.
**NOTE, the following two birds have moved between public and private property, but have MOSTLY been seen on PRIVATE PROPERTY, particularly when they are closer to 30th street. Private property should be respected:
—On October 29 a Black-throated Green Warbler was reported in Boulder at 29th Street where it crosses over tiny Canyon Creek just north of Baseline Road. A Wood Thrush was further east along the creek, almost to 30th Street and was last reported on October 26. The Black-throated Green Warbler was first reported on October 19 by Nick Moore. The Wood Thrush was first reported on October 23 by Nathan Pieplow.
—On October 26 a Blackburnian Warbler was reported in Boulder at Pleasant View Marsh by Ernest Crvich.
—On October 26 a Little Blue Heron was reported in Lafayette at Waneka Lake/Greenly Preserve by Randall Siebert.
--On October 28 a Red-necked Grebe was reported at Baseline Reservoir in Boulder, first reported by Rob Cassady on October 26.
--On October 31 a Tundra Swan was reported at Lagerman Reservoir. (3) were first reported on October 30 by Luke Pheneger.
--On October 30 (5) Tundra Swans were reported at Barker Reservoir in Boulder by Loren Merrill.
--On October 31 a Tundra Swan was reported at Boulder Reservoir by Peter Burke.
--On October 31 a female Black Scoter was reported at Plaster Reservoir by Matt Hofeditz.
—On October 31 a Pacific Loon was reported at Marston Reservoir-West End. First reported on October 25 by Doug Kibbe.
—On October 27 a Rusty Blackbird was reported at Chatfiled SP - Plum Creek Delta. First reported on October 26 by “K”.
—On October 26 a Black Scoter was reported at Chatfield SP Marina. First reported at the Original Heronry Overlook on October 25 by Joey Kellner.
EL PASO COUNTY:
--On October 29 a pair of Surf Scoters was reported at Prospect Lake within Memorial Park, Colorado Springs, by Tanja Britton.
--On October 31 an immature Golden-crowned Sparrow was reported at the feeder set-up within Red Rock Canyon Open Space, first reported by Jim Merritt on Oct. 30.
--On October 29 a Black-throated Sparrow was reported along Skyline Drive in Canon City by Jerry DeBoer.
—On October 31 a Black Scoter was reported in Lakewood at Bear Creek Lake Park. First reported on October 26 by Phil Lyon.
—On October 26 a Black Scoter was reported at Chatfield SP-Swim Beach by Aaron Snipe and in the Massey Draw Area by Joey Kellner.
—On October 26 a Magnolia Warbler was reported in Lakewood at Denver West Office Park (1658 Cole Boulevard), Building 6. The Magnolia Warbler was first reported on October 20 by Kevin DeBoer. On October 25 a Black-throated Green Warbler was at this same location; first reported on October 23 by Mark Chavez. A Nashville Warbler and a Yellow Warbler, rare for this date, have also been reported at this site as recently as October 26.
—On October 24 a Pine Warbler was reported in Lakewood at the pond by Lakeview Towers at Belmar Apts. (679 S. Reed Ct.) by Steve Mlodinow. This is also known on e-bird as “stakeout Yellow-throated & Prairie Warblers, Lakewood 2017”.
—On October 26 a Red-throated Loon was reported at Neenoshe Reservoir by Steve Mlodinow.
--On October 31 a Rusty Blackbird was reported along a flowing ditch nw of the nw corner of Boxelder Reservoir #3 (Smith Reservoir SWA) on the east side of Larimer CR11 north of 66 Road. The bird frequents a weir area with dripping water about 50 yards east of, and viewable from, CR11. There is a green metal gate along CR11 and walk-ins from here are allowed along a two-lane dirt road e of the gate to access views of the ditch. First reported on 30 October by Dave Leatherman.
--On October 30 a White-winged Scoter was reported at Horseshoe Lake in Loveland by Nick Komar.
--On October 31 (5) Trumpeter Swans were reported at the north end of Boyd Lake S.P. (fee area) by Judie Wright.
--On October 31 (4) Tundra Swans, 2a and 2i, were reported at the north end of Boyd Lake S.P. by Derek Hill. Since swans are notorious for not sticking and staying it is unknown whether the report of Trumpeter Swans in the same location involves the same individuals assigned different identities by two different birders or separate birds.
--On October 31 a Tundra Swan was reported at Lake Estes in Estes Park by Marc Hemmes.
--On October 31 an immature Long-tailed Duck was reported in the north end of Boyd Lake S.P. by Derek Hill.
—On October 26 a sub adult male BROAD-BILLED HUMMINGBIRD was reported at a private residence in Palisade. The address is 566 36 Road (East Orchard Mesa ). The house is at the end of a long driveway just across from the fire station. The house is on the right side of the drive. The hummer is still coming in on a regular basis to the driveway feeder. Best time for viewing is in mornings when the sun is on the driveway feeder. It is in the shade after 2 pm. Visitors are welcome to view FROM THE DRIVEWAY and park along the driveway. First reported on September 28 by Gene Byrne. This would be the fourth state record, the first in 2002 was also in Mesa County.
--On October 31 (2) Trumpeter Swans were reported at highline Lake S.P. by Carol Ortenzio.
--On October 31 (21) Tundra Swans, yes 21, were reported at Spinney Mountain Reservoir in South Park by David Tonnessen
--On October 31 (19) Tundra Swans, yes 19, were reported at Eleven Mile Reservoir in South Park by David Tonnessen. Also reported here was a Chestnut-collared Longspur, rare for any of Colorado's mountain parks.
--On October 31 a Dunlin was reported at Lake Catamount s of Steamboat Springs by Grey Barbier.
—On October 26 a Pacific Loon was reported at the North end of Union Reservoir by Glenn Walbek.
--On October 28 a Dunlin was reported at the North end of Union Reservoir by Susan Rosine.