Dinosaur Ridge - Bird Conservancy of the RockiesColorado, USA
Daily Raptor Counts: Apr 25, 2018 |
Species | Day's Count | Month Total | Season Total |
Black Vulture | 0 | 0 | 0 |
Turkey Vulture | 0 | 81 | 83 |
Osprey | 1 | 6 | 6 |
Bald Eagle | 0 | 2 | 5 |
Northern Harrier | 0 | 2 | 2 |
Sharp-shinned Hawk | 0 | 14 | 18 |
Cooper's Hawk | 1 | 27 | 35 |
Northern Goshawk | 0 | 1 | 2 |
Red-shouldered Hawk | 0 | 0 | 0 |
Broad-winged Hawk | 0 | 4 | 4 |
Red-tailed Hawk | 1 | 56 | 224 |
Rough-legged Hawk | 0 | 0 | 1 |
Swainson's Hawk | 1 | 4 | 4 |
Ferruginous Hawk | 0 | 2 | 4 |
Golden Eagle | 0 | 3 | 11 |
American Kestrel | 0 | 16 | 30 |
Merlin | 0 | 0 | 0 |
Peregrine Falcon | 0 | 2 | 3 |
Prairie Falcon | 0 | 1 | 3 |
Mississippi Kite | 0 | 0 | 0 |
Unknown Accipiter | 1 | 9 | 13 |
Unknown Buteo | 0 | 16 | 21 |
Unknown Falcon | 0 | 3 | 3 |
Unknown Eagle | 0 | 2 | 2 |
Unknown Raptor | 0 | 6 | 7 |
Total: | 5 | 257 | 481 |
Observation start time: | 09:30:00 |
Observation end time: | 14:00:00 |
Total observation time: | 4.5 hours |
Official Counter | Joyce Commercon |
Observers: | |
Visitors:The muddy trail seemed to lower the number of hikers and bikers on the
trail today. A few came up but only for the view.
Weather:The day was sunny with blue skies and zero cloud cover; by mid-afternoon, a
few tiny clouds formed then dissipated along the western ridges. A few
clouds finally rode the western horizon at the very end of the watch. The
patchy snow that covered Green Mountain, the western valley and the western
ridges thinned considerably as the day warmed during the watch from 10 C to
15 C. Mild winds (bft 1 and 2) were predominately from the east. Visibility
was good.
Raptor Observations:Featureless blue skies made for a difficult watch. Luckily, the two morning
migrants (the Cooper's Hawk and the Osprey) were not "too high" to see
easily and came directly along the Ridge. A few hours passed before the
next migrant, a Red-tailed, was spotted with binoculars, far down the Ridge
and already very high. The last two migrants were caught in binocular scans
of the western ridges. The Swainson's Hawk's identity was confirmed as it
paused to circle up briefly near the Cabrini Shrine area and offered a view
of a lighter body with black-in-back flight feathers before it headed
north. In the morning, an apparently local Prairie Falcon, illuminated by
the sun bouncing off the snow, soared and circled very high over the
western valley but did not move north. Later, a local adult Cooper's Hawk
was spotted in the western valley as well, much lower in altitude. The
local Red-tailed Hawk pair sat together for a while on their favorite phone
pole in Rooney Valley in the morning. The local Turkey Vultures made
several rounds up and down the ridges and valleys.
Non-raptor Observations:A Red-breasted Nuthatch announced its presence with its tinny voice, then
proceeded to inspect, carefully and quickly, a few trees near the platform.
Also seen or heard were Spotted Towhee, Black-billed Magpie, Western
Meadowlark, Black-capped Chickadee, White-throated Swift, Broad-tailed
Hummingbird, Western Bluebird, American Crow, Common Raven, Tree Swallow,
and Townsend's Solitaire.
Report submitted by Matthew Smith (
matt....@birdconservancy.org)
Dinosaur Ridge - Bird Conservancy of the Rockies information may be found at:
http://www.birdconservancy.org/More information at
hawkcount.org: [
Site Profile] [
Day Summary] [
Month Summary]
Site DescriptionDinosaur Ridge is the only regularly staffed hawkwatch in Colorado and is the
best place in the world to see migrating Ferruginous Hawks. Dinosaur Ridge may
be the best place in the country to see the rare dark morph of the Broad-winged
Hawk (a few are seen each spring). Hawkwatchers who linger long enough may see
resident Golden Eagles, Red-tailed Hawks and Prairie Falcons, in addition to
migrating Swainson's, Cooper's and Sharp-shinned Hawks, American Kestrels and
Turkey Vultures. Peregrine Falcons and Ferruginous Hawks are uncommon; Northern
Goshawk is rare but regular. Non-raptor species include Rock Wren, and sometimes
Bushtit, Western Bluebird, Sandhill Crane, White-throated Swift, American White
Pelican or Dusky Grouse. Birders are always welcome.
The hawkwatch is generally staffed by volunteers from Bird Conservancy of the
Rockies from about 9 AM to around 3 PM from March 1st to May 7th.
Directions to site:From exit 259 on I-70 towards Morrison, drive south under freeway and take left
into first parking lot, the Stegosaurus lot. Follow small signs from the south
side of lot to hawkwatch site. The hike starts heading east on an old two-track
and quickly turns south onto a trail on the west side of the ridge. When the
trail nears the top of the ridge, turn left, head through the gate, and walk to
the clearly-visible, flat area at the crest of the ridge.