Compiler: Mary Driscoll
Date: March 25, 2012 
e-mail: rba AT cfobirds.org 
phone: 303-659-8750
 
This is the Colorado Rare Bird Alert for Sunday, March 25, 2012, sponsored by 
Denver Field Ornithologists and the Rocky Mountain Bird Observatory. If you are 
phoning in a message, you can skip the recording by pressing the star key (*) 
on your phone at any time. Please leave your name, phone number, detailed 
directions, including county and dates for each sighting. It would be helpful 
if you would spell your last name.
 
Highlight species include: (*denotes that there is new information on this 
species in this report)
 
TUNDRA SWAN (Logan)
Red-necked Grebe (Weld)
Barrow's Goldeneye (La Plata)
WESTERN GULL (Washington)
GLAUCOUS-WINGED GULL (Boulder, Washington)
Glaucous Gull (Washington)
GREAT BLACK-BACKED GULL (Logan)
Thayer's Gull (Larimer, Washington)
ICELAND GULL (Washington)
Lesser Black-backed Gull (Boulder, Larimer,Washington,Weld)
SNOWY OWL (Bent, Lincoln)
Greater Roadrunner (Jefferson)
GOLDEN-CROWNED SPARROW (Boulder, Jefferson)
Harris's Sparrow (Jefferson)
Brown-capped Rosy-Finch (Summit)
Gray-crowned Rosy-Finch (Summit)
PURPLE FINCH (Boulder)
 
Please note, detailed directions to most of the following locations can be 
found on the Colorado County Birding Website: 
http://www.coloradocountybirding.com/index.php  
 
Bent County: 
 --On March 22, Nelson reports the immature female SNOWY OWL still present at 
John Martin Reservoir on the north side.  It prefers cliff tops and areas of 
sand, rock and beach on the north side of the reservoir approximately one and 
one-half miles west of Point Overlook. So far, birders have given the Snowy Owl 
a wide berth while observing, and I'd like to say thanks for the cooperation 
shown so far with following my request to remain in vehicles while looking, and 
not approaching too closely. Snowy Owls this far south have enough problems 
without being flushed by birders.

Boulder County:
--The GOLDEN-CROWNED SPARROW continues near the Teller Farm Parking lot on 
Valmont through March 11.
--On March 15, Mlodinow found a 1st cycle GLAUCOUS-WINGED GULL at Panama 
Reservoir.  It is present as of March 17.
--On March 17, Floyd reports a Lesser Black-backed Gull at Panama Reservoir.
--On March 23, Hutchinson reports 2 PURPLE FINCH, a male and female, in  
southern Lafayette; This is about 70 yds east of US 287, 0.5 mi south of Empire 
Rd and 0.5 mi north of the Northwest Pkwy overpass. There is a culvert over a 
drainage ditch here and the two were in the second tree east of the highway 
along the south side of the drainage. For those with GPS the exact coordinates 
are:  39.965280, -105.089267. (Give these coordinates to Google Maps or 
MapQuest.)
 
Jefferson County:
--The GOLDEN-CROWNED SPARROW at the Red Rocks Trading Post feeders continued to 
be seen thru March 20, as reported by Henwood.
--Schmoker reports the Greater Roadrunner cruised by the Hawkwatch on March 18, 
at Dinosaur Ridge. It appeared around 10:15 below Hawk
watch on the East side of the ridge and continued to move steadily to the South 
and out of view. 
--Henwood refound the adult and juv Harris's Sparrows on March 12, near the 
Boat Launch area at Bear Creek Lake Park.

La Plata County: 
--Barrow's Goldeneyes remain on the Animas River.  On March 17, as reported by 
Beatty, there was an adult female at the second fishing pull-out south from 
town as the road descends to near river level.  This section of the Animas has 
been fairly reliable for Barrow's this winter.  However, the mixed Goldeneye 
flock spooks easily and then flies up or down river for a quarter mile or more.
 
            Logan County:
            --On March 11, Mlodinow reports 2 TUNDRA SWANS at Red Lion SWA and 
Roller confirms they were present on the 12th.
            --On March 12, Roller reports a GREAT BLACK-BACKED GULL at Jumbo 
Reservoir.
                
            Lincoln County:
            --On March 18, Ackert reports a "very white" Snowy Owl just off of 
I-70 near exit 376 (Bovina). The Owl was on the north side of the highway
            between the towns of Bovina and Arriba.

            Summit County:
            --On March 17, Pieplow reports Gray-crowned and Brown-capped 
Rosy-Finches at residential feeders in Silverthorne.
 
Washington County:
--On March 23, Mlodinow reports from Prewitt Reservoir, 8 GLAUCOUS GULLS (1 
adult, the remainder 1st/2nd years) and 3 Lesser Black-Blacked Gulls (2 second 
years and an adult),  10 Thayer's Gulls, mostly 1st year birds, & 1 Gull 
between ICELAND and Thayer's Gull, unable to determine its identity.  No sign 
of "pure" Iceland Gulls or the Western Gull.
             
            Weld County:
            --On March 19, Lefko reports a Lesser Black-backed Gull (ad) (WCR 
31/80)--the Weld County gulls love chasing farmer's disced fields.
            --The Red-necked Grebe 1st reported by Plage is still at Union 
Reservoir as of March 15.
 
Upcoming DFO Field Trips:
Saturday, March 31 Rollin’ on the River:
Leader: Jackie King Meet leader at 9:00 am in the parking lot at 3rd and Walnut 
on the Auraria Campus. Observ-ers will walk along the South Platte River to 
look at ducks, gulls, and any other birds we can find. This will be a half day 
trip, ending by noon so lunch is optional. The leader uses a wheelchair so the 
trip will be on paved, level sidewalks perfect for those with limited mobility. 
Please call leader if you intend on going. 720.381.3314 or 303.287.1644 

Saturday, March 31 Fountain Creek Regional Park and Big Johnson Reservoir: 
Leader: Paul Slingsby, (303) 422-3728, mail to [email protected] . Please 
register with the leader before-hand, spring weather might cause a change. Meet 
the leader at 07:00 at the south-east corner of the Great Indoors parking lot. 
We will carpool from there. Great Indoors is just north of C470 on Yosemite. 
From Denver by I-25 use exit 195, and go West on County Line Road to Yosemite. 
Take Yosemite south to the Great Indoors, which will be on the right (west). 
Fountain Creek Regional Park has good trails for easy walking near ponds, 
wet-lands, grassland and the creek. Spring migration might be underway, expect 
surprises. Bring lunch. Telescope and 2-way radio will be useful if you wish to 
bring them. Plan to be back at the carpool meeting place by 17:00 at the 
latest. If you want to meet us at Fountain Creek Regional Park, plan for 08:30 
at the Peppergrass lane parking lot. 
                 
           
Good Birding,

Mary Driscoll
Unincorporated Arapahoe County

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