Date: 3/11/18 4:34 pm
From: <reports...>
Subject: [cobirds] Dinosaur Ridge - Bird Conservancy of the Rockies (11 Mar 2018) 35 Raptors
Dinosaur Ridge - Bird Conservancy of the Rockies
Colorado, USA
Daily Raptor Counts: Mar 11, 2018

Species Day's Count Month Total Season Total
------------------ ----------- -------------- --------------
Black Vulture 0 0 0
Turkey Vulture 0 0 0
Osprey 0 0 0
Bald Eagle 0 0 0
Northern Harrier 0 0 0
Sharp-shinned Hawk 0 0 0
Cooper's Hawk 0 1 1
Northern Goshawk 0 0 0
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 33 61 61
Rough-legged Hawk 0 0 0
Swainson's Hawk 0 0 0
Ferruginous Hawk 1 1 1
Golden Eagle 1 3 3
American Kestrel 0 0 0
Merlin 0 0 0
Peregrine Falcon 0 0 0
Prairie Falcon 0 0 0
Mississippi Kite 0 0 0
Unknown Accipiter 0 0 0
Unknown Buteo 0 0 0
Unknown Falcon 0 0 0
Unknown Eagle 0 0 0
Unknown Raptor 0 0 0

Total: 35 66 66

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

Official Counter: Mike Fernandez

Observers: Carol Cwiklinski, Steve Small

Approximately 20 visitors to the platform today, but none with any
questions about what we were doing. We were fairly busy with binoculars
consistently up for core hours.

All day: Chilly but mild east winds and mostly sunny with a thick brown
cloud low on the northeast horizon, haze to the south, and clear blue skies
northwest. Wispy clouds persisted most of the day over the summits to the
west, which, combined with easterly winds, made for good (even if distant
HOF) visibility of migrators. They mostly took that path in the flyway.
Very few were seen directly over or east of the ridge. WeatherUnderground
PWS: Solterra.

Raptor Observations:
Migrating Raptors: The predominant pattern for migrators was to appear
south of Mt. Morrison, rise in a column, and then continue north and
northwest passing Bare Slope and beyond. Nearly all beyond limit of unaided
eye for initial spotting, requiring extensive use of binocs (HOF 3-4). The
usual looking straight down ridge was not very productive today. Of all the
RTHA, a couple were very dark morph today. Brilliant to see against the

Non-Migrating Raptors: A pair of Red-tailed escorts were very busy all day.
A very clearly marked Prairie Falcon (armpits lit up by bright sunlight)
stooped an arch from Green Mountain through Golden and then over West Ridge
was conservatively not counted as a migrator.

Non-raptor Observations:
Busy start to the day (interesting that this was earlier start to the
count, 8:00 AM MST versus usual 9:00 AM MST due to daylight saving time)
with lots of small bird activity and sound effects. That, in spite of
extreme motocross noise due to an event down in thunder valley today.
Robins hung out in the juniper trees ridge west most of the day.

Woodhouse's Scrub-jay (3), Black-billed Magpie (8), American Crow (3 plus
many distant corvid sightings that may have included AMCR), Black-capped
Chickadee (1), Western Bluebird (5), Mountain Bluebird (4), Bluebird
species (11, HOF too great to distinguish), Townsend's Solitaire (3,
sharing branch space frequently with AMROs), American Robins (6), and House
Finch (2).

All birds submitted to eBird.

Look west if the easterlies prevail.

Report submitted by Bird Conservancy of the Rockies (<jeff.birek...>)
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

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