Dinosaur Ridge
Colorado, USA
Daily Raptor Counts: Mar 13, 2011
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Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 0 0 0
Osprey 0 0 0
Bald Eagle 4 20 20
Northern Harrier 0 0 0
Sharp-shinned Hawk 2 4 4
Cooper's Hawk 0 2 2
Northern Goshawk 0 0 0
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 8 49 49
Rough-legged Hawk 0 0 0
Swainson's Hawk 0 0 0
Ferruginous Hawk 1 9 9
Golden Eagle 0 7 7
American Kestrel 2 2 2
Merlin 0 0 0
Peregrine Falcon 0 0 0
Prairie Falcon 0 4 4
Mississippi Kite 0 0 0
Unknown Accipiter 0 0 0
Unknown Buteo 0 8 8
Unknown Falcon 0 0 0
Unknown Eagle 0 0 0
Unknown Raptor 0 2 2
Total: 17 107 107
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Observation start time: 08:00:00
Observation end time: 16:00:00
Total observation time: 7.83 hours
Official Counter: Paul Slingsby
Observers: Cynthia Madsen, Francis Commercon, Joyce Commercon,
Lee Farrell
Visitors:
08:10 to 16:00 Paul Slingsby, Observer
08:00 to 16:00 Francis Commercon, trainee
08:00 to 16:00 Joyce Commercon, trainee
09:00 to 16:00 Cynthia Madsen
09:37 to 16:00 Lee Farrell
09:45 to 16:00 Bill Wuerthele
12:58 to 16:00 Karen Clark
12:58 to 16:00 Joe Lupfer
Weather:
Temp 3 deg. am, 10 deg. C, pm.
1 inch snow on ground, melted rapidly.
During am low fog and clouds moved over ridges.
Visibility remained at least 10 Km most of the day.
Wind E1 in am, shifted to W4 in pm
Raptor Observations:
Two individual local PrFa visited, one has a missing left tail feather.
The dark morph RTHa seen last week, judged local is now missing.
Non-raptor Observations:
Approximately 50 blue bird species individuals passed flying north.
4 BuTi foraged near Dinosaur Ridge.
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Report submitted by Rocky Mountain Bird Observatory ([email protected])
Dinosaur Ridge information may be found at:
http://www.rmbo.org/
Site Description:
Dinosaur Ridge is the only regularly staffed hawkwatch in Colorado, and 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 Falcon and Ferruginous Hawk 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 staffed by the Rocky Mountain Bird Observatory generally
from about 9 AM to around 4 PM from the first week of March to the first
week of May.
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.
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