Colorado, USA
| Daily Raptor Counts: Apr 10, 2023 | |||
| Species | Day's Count | Month Total | Season Total |
| Black Vulture | 0 | 0 | 0 |
| Turkey Vulture | 18 | 114 | 129 |
| Osprey | 0 | 12 | 14 |
| Bald Eagle | 2 | 10 | 41 |
| Northern Harrier | 1 | 3 | 14 |
| Sharp-shinned Hawk | 7 | 25 | 33 |
| Cooper's Hawk | 3 | 78 | 96 |
| Northern Goshawk | 0 | 1 | 8 |
| Red-shouldered Hawk | 0 | 0 | 0 |
| Broad-winged Hawk | 0 | 1 | 1 |
| Red-tailed Hawk | 12 | 68 | 355 |
| Rough-legged Hawk | 0 | 0 | 0 |
| Swainson's Hawk | 0 | 1 | 1 |
| Ferruginous Hawk | 0 | 3 | 43 |
| Golden Eagle | 1 | 2 | 28 |
| American Kestrel | 4 | 98 | 158 |
| Merlin | 0 | 3 | 13 |
| Peregrine Falcon | 0 | 0 | 5 |
| Prairie Falcon | 0 | 0 | 5 |
| Mississippi Kite | 0 | 0 | 0 |
| Unknown Accipiter | 0 | 0 | 3 |
| Unknown Buteo | 0 | 0 | 1 |
| Unknown Falcon | 0 | 0 | 0 |
| Unknown Eagle | 0 | 0 | 0 |
| Unknown Raptor | 0 | 0 | 2 |
| Total: | 48 | 419 | 950 |
| Observation start time: | 08:30:00 |
| Observation end time: | 16:30:00 |
| Total observation time: | 8 hours |
| Official Counter | Ajit Antony |
| Observers: | Janet Peters, Karen Rutledge, Liza Antony, Martha Delporte, Natalie Uschner-Arroyo |
Visitors:
6 visitors asked questions, ably answered by our volunteers.
Weather:
Specific hourly info at hawkcount.org. The <5% cloud cover predicted all day fortunately wasn't so. We had cloud cover from 5-50% which gave us a chance to find migrants in an otherwise blue sky. Up to 7 paragliders flying all the way from NE to far south to Warren Peak indicated good thermal formation, though we could not see any clouds capping them as the humidity was very low 19%>6%.
Raptor Observations:
The 1st raptor seen was an adult TV at 8:48 AM a non-migrant, the 1st migrant was also a TV 2 minutes later. Almost every migrant was seen far to the west with a few overhead and only one to the east. A Harlan’s dark intermediate morph juvenile with a dark body with a white throat, dark underwing coverts, with a juvenile banded tail. A RT intermediate (rufous) morph with mottled rufous underwing coverts and body (not black). 2 of the 3 non-migrant TV landed on the 3 utility poles north of the watch and the volunteers got a good look at them through my scope.
Non-raptor Observations:
Rock Wren 1 called repeatedly and visited the SE corner of the watch doing its “calisthenics†(knee-bends) which Karen Rutledge hadn’t seen before, Woodhouse's Scrub-Jay 1, Tree Swallow 1, Mountain Bluebird 2, Common Merganser 3, Common Raven 5, American Crow 3, House Finch 1, Townsend’s Solitaire 2, Northern Flicker 1. I used the decoy Great Horned Owl which is effective at Eastern hawk watches I have counted at, but not one raptor today came to investigate it.
Predictions:
South based winds becoming East in the afternoon as usual with 0% cloud cover predicted, so should be similar to today.
Report submitted by DAVID HILL ()
Dinosaur Ridge - Denver Field Ornithologists information may be found at: http://www.dfobirds.org
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]
Site Description
Dinosaur Ridge is the only regularly staffed hawk watch in Colorado and is the
best place in the world to see migrating Ferruginous Hawks. Hawk watchers may
see 17 species of migrating raptors; and it is an excellent site to see rare
dark morph buteos including Broad-winged hawk, Swainson’s hawk, Ferruginous
hawk, Rough-legged hawk and Red-tailed Hawk. Other raptors we see include Golden
and Bald Eagles, Northern harrier, Osprey, Peregrine Falcons, Prairie Falcons,
Cooper's and Sharp-shinned Hawks, American Kestrels, Merlin, and Turkey
Vultures. Northern Goshawk is uncommon but also counted each season. Non-raptor
species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane,
White-throated Swift, American White Pelican, and Dusky Grouse. Birders of any
skill level are always welcome. The hawk watch at Dinosaur Ridge is staffed by a
Hawk Counter and volunteers from 9:30 AM to 5:30 PM from March 1st to May 14th,
weather permitting.
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 hawk watch signs from the
southwest end of the parking lot to the hawk watch 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, and walk to
the flat area at the crest of the ridge. (Distance: 0.56 miles, Elevation gain:
259 feet)
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