Date: 4/17/17 7:29 pm
From: <reports...>
Subject: [cobirds] Dinosaur Ridge - Bird Conservancy of the Rockies (17 Apr 2017) 25 Raptors
Dinosaur Ridge - Bird Conservancy of the Rockies
Colorado, USA
Daily Raptor Counts: Apr 17, 2017

Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 1 34 34
Osprey 1 3 3
Bald Eagle 0 4 13
Northern Harrier 0 0 0
Sharp-shinned Hawk 4 22 32
Cooper's Hawk 9 42 47
Northern Goshawk 0 0 0
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 3 3
Red-tailed Hawk 3 57 237
Rough-legged Hawk 0 0 0
Swainson's Hawk 2 7 7
Ferruginous Hawk 0 2 7
Golden Eagle 0 0 3
American Kestrel 1 26 38
Merlin 0 0 0
Peregrine Falcon 0 4 6
Prairie Falcon 1 5 6
Mississippi Kite 0 0 0
Unknown Accipiter 0 4 8
Unknown Buteo 0 9 24
Unknown Falcon 0 5 8
Unknown Eagle 0 0 0
Unknown Raptor 3 5 12

Total: 25 232 488

Observation start time: 08:00:00
Observation end time: 14:00:00
Total observation time: 6 hours

Official Counter: Joyce Commercon

Observers: Richard Cuellar

Lynne Forrester arrived early with her binocs and scope, ready for the
migrants. Her spotting ability and skill at identifying accipiters were
greatly appreciated today. Several hikers and one biker came up for the
view. Two different couples, after looking from the platform, also inquired
as to what we were watching and were interested to learn which migrating
raptors we count. One couple then asked where to go to see the Dinosaur
footprints. (It is, after all, Dinosaur Ridge.)

The day was warm and mostly cloudy. The watch began with 50 percent
cloud-cover (thin and scattered, none to the south) that increased by the
end of the second hour to 80 to 90 percent. Temperatures rose from 12 C to
about 20 C. Winds were predominantly from the east or northeast. Initially
calm, they shifted to bft 3 at about the same time cloud-cover increased.
Visibility was good (at least 10km) but hazy at distance.

Raptor Observations:
Accipiters made up about half of the migrants today, with about an equal
number passing near Dinosaur Ridge as passed along the western ridges. An
Osprey was one of the many other raptors observed moving north along the
far western ridges. Two Swainson's Hawks were spotted heading north; one in
the early morning and one near the end of the watch. About two-thirds of
the migrants streamed through during a two-hour period from about 9am to
11am MST. Some local Red-tailed Hawks were active in the morning, but
seemed less so later in the watch. Six local Turkey Vultures were seen to
circle up south of Mount Morrison, in a very narrow kettle, before soaring
up and down the ridges during the watch.

Non-raptor Observations:
Also seen or heard were Western Meadowlark, Spotted Towhee, Black-capped
Chickadee, White-throated Swift, Black-billed Magpie, Townsend's Solitaire,
Tree Swallow, Woodhouse's Scrub-Jay, American Crow, Chipping Sparrow,
Bushtit and Common Raven.
Report submitted by Bird Conservancy of the Rockies (<jeff.birek...>)
Dinosaur Ridge - Bird Conservancy of the Rockies information may be found 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

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