Date: 3/29/21 3:25 pm
From: <reports...>
Subject: [cobirds] Dinosaur Ridge - Denver Field Ornithologists (29 Mar 2021) 11 Raptors
Dinosaur Ridge - Denver Field Ornithologists
Colorado, USA
Daily Raptor Counts: Mar 29, 2021

Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 0 2 2
Osprey 0 0 0
Bald Eagle 0 12 12
Northern Harrier 0 0 0
Sharp-shinned Hawk 0 14 14
Cooper's Hawk 1 10 10
Northern Goshawk 0 4 4
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 8 181 181
Rough-legged Hawk 0 1 1
Swainson's Hawk 0 0 0
Ferruginous Hawk 0 6 6
Golden Eagle 1 6 6
American Kestrel 0 2 2
Merlin 0 4 4
Peregrine Falcon 0 4 4
Prairie Falcon 0 1 1
Mississippi Kite 0 0 0
Unknown Accipiter 0 1 1
Unknown Buteo 1 8 8
Unknown Falcon 0 2 2
Unknown Eagle 0 0 0
Unknown Raptor 0 3 3

Total: 11 261 261

Observation start time: 09:00:00
Observation end time: 14:00:00
Total observation time: 5 hours

Official Counter: Mike Fernandez


I had 55 visitors to the platform today, with three conversations about

The skies were cloudless and the weather was warm. The early haze at the
horizon was gone by 10:30 MST, when a west wind suddenly picked up to 5-6
BFT gusts.

Raptor Observations:
Migrating Raptors: 
The high winds may have grounded the smaller raptors
(plus the local perching birds). The COHA powered through the Hwy 93 valley
at amazing speed and strength. 

Non Migrating Raptors:

Although I was alone on the watch, from 12-2 MST the three
local RTHAs kept me company with their very talented entertainment. They
criss-crossed the ridge, doing roller coasters. And they faced into the
wind, holding still and then elevatoring straight up with subtle flicks of
the fingers and tail. They also flew above C-470, flying faster than the

Non-raptor Observations:
A herd of ~20 Elk, BBMA-1, CORA-13 (group of 12 kettled north of the
platform and headed farther north indirectly), TOSO-1, MOCH-3.

I could smell Greeley today, so you know what that means.
Report submitted by DAVID HILL ()
Dinosaur Ridge - Denver Field Ornithologists 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 of any skill level are always welcome. HawkWatch at
Dinosaur Ridge is generally staffed by volunteers 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 southwest end of lot to the 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. (Distance: 0.56 miles, Elevation gain: 259 feet)

You received this message because you are subscribed to the Google
Groups "Colorado Birds" group.
To post to this group, send email to <cobirds...>
For more options, visit this group at
* All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate
* Join Colorado Field Ornithologists
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 view this discussion on the web visit<4dda344b286286ea9582f7bf59d187ee...>

Join us on Facebook!