Date: 3/28/21 3:18 pm
From: <reports...>
Subject: [cobirds] Dinosaur Ridge - Denver Field Ornithologists (28 Mar 2021) 10 Raptors
Dinosaur Ridge - Denver Field Ornithologists
Colorado, USA
Daily Raptor Counts: Mar 28, 2021

Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 2 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 0 9 9
Northern Goshawk 0 4 4
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 5 173 173
Rough-legged Hawk 0 1 1
Swainson's Hawk 0 0 0
Ferruginous Hawk 0 6 6
Golden Eagle 0 5 5
American Kestrel 0 2 2
Merlin 0 4 4
Peregrine Falcon 1 4 4
Prairie Falcon 1 1 1
Mississippi Kite 0 0 0
Unknown Accipiter 1 1 1
Unknown Buteo 0 7 7
Unknown Falcon 0 2 2
Unknown Eagle 0 0 0
Unknown Raptor 0 3 3

Total: 10 250 250

Observation start time: 09:15:00
Observation end time: 13:30:00
Total observation time: 4.25 hours

Official Counter: Gary Rossmiller

Observers: Aaron Shipe, Janet Peters, Mark Chavez, Vonnie Robinson

Aaron Shipe and Mark Chavez were on site until 11am, helped spotting. Trail
very to extremely busy today, including 3 electric unicyclists coming onto
the platform from the back way and then continuing south down the stairs.

WOW! Wind changed direction almost hourly, from the east then the west,
gusting to B6 out of the west. Almost calm at times, B2-3 common. Overcast
skies, improving during the day, but sun never really came out. Horizons
blue in all directions. Temps from 7.7C up to 16.1C, barometer falling
slightly 24.73in to 24.70in.

Raptor Observations:
Very slow, most flights overhead, one UA very low to the west. 1st TV's
recorded, saw 2 circling over Hwy 6 on the way to site, also. Local RT pair
fairly active showing off how to handle the high winds. One local TV going
SE past Green Mountain.

Non-raptor Observations:
Elk above I-70, Swift, Bush Tit, Solitaire, Crows, Ravens, Magpies, Robins.
Very few flights of local birds. Trail is almost dry, still some muddy

Dunno, with this weather changing so much.
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)

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