Date: 3/29/18 3:24 pm
From: <reports...>
Subject: [cobirds] Dinosaur Ridge - Bird Conservancy of the Rockies (29 Mar 2018) 7 Raptors
Dinosaur Ridge - Bird Conservancy of the Rockies
Colorado, USA
Daily Raptor Counts: Mar 29, 2018

Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 0 1 1
Osprey 0 0 0
Bald Eagle 0 3 3
Northern Harrier 0 0 0
Sharp-shinned Hawk 0 3 3
Cooper's Hawk 0 5 5
Northern Goshawk 0 1 1
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 7 146 146
Rough-legged Hawk 0 1 1
Swainson's Hawk 0 0 0
Ferruginous Hawk 0 2 2
Golden Eagle 0 7 7
American Kestrel 0 13 13
Merlin 0 0 0
Peregrine Falcon 0 1 1
Prairie Falcon 0 1 1
Mississippi Kite 0 0 0
Unknown Accipiter 0 3 3
Unknown Buteo 0 5 5
Unknown Falcon 0 0 0
Unknown Eagle 0 0 0
Unknown Raptor 0 1 1

Total: 7 193 193

Observation start time: 07:45:00
Observation end time: 13:15:00
Total observation time: 5.5 hours

Official Counter: Roger Rouch

Observers: Joel Chapa


Briefly clear then partly cloudy the remainder of the day. Much of the
landscape was snow covered. Around noon a light SE breeze shifted to a
brisk wind of 3 or 4 Bft from the NE. Temps from the mid to upper 30's.
Flecks of snow at day's end.

Raptor Observations:
Local and migrating activity was evenly distributed through the day, but
sparse and mostly over the ridge or Rooney valley and very few raptors to
the west. Birds seemed to struggle into the wind, or drift looking for
good air currents (somewhat subjective observation). Of the migrating
Red-tails, two were intermediate morphs. A local Golden Eagle flew north
to south past the site at eye level and received significant harassment
from a local Red-tail. A Prairie Falcon(s) was sighted twice in an almost
migrating direction but veered away before passing I-70.

Non-raptor Observations:
Woodhouse's Scrub Jay, Townsend's Solitaire, Bushtit, American Robin,
Common Raven. Three elk grazed and rested on the east slope of the ridge
all day.

Maybe some sun and bare ground will be better for air currents and raptor
movement? The lower portion of the trail was muddy, but not as sloppy as
it gets sometimes.
Report submitted by Matthew Smith (<matt.smith...>)
Dinosaur Ridge - Bird Conservancy of the Rockies information may be found at:

More site information at

Site Description:
Dinosaur 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

You received this message because you are subscribed to the Google Groups "Colorado Birds" group.
To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+<unsubscribe...>
To post to this group, send email to <cobirds...>
To view this discussion on the web visit<dd8259c808aa6384f966078e1b077f87...>
For more options, visit

Join us on Facebook!