Sunday, 19 April 2026

[cobirds] Dinosaur Ridge - Denver Field Ornithologists (19 Apr 2026) 165 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Apr 19, 2026
Species Day's Count Month Total Season Total
Black Vulture 0 0 0
Turkey Vulture 14 126 153
Osprey 7 32 38
Bald Eagle 1 11 24
Northern Harrier 0 20 32
Sharp-shinned Hawk 14 85 106
Cooper's Hawk 13 131 183
American Goshawk 0 0 1
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 10 18 18
Red-tailed Hawk 8 160 408
Rough-legged Hawk 0 0 0
Swainson's Hawk 1 14 14
Ferruginous Hawk 0 6 15
Golden Eagle 0 1 8
American Kestrel 93 403 542
Merlin 0 2 5
Peregrine Falcon 0 1 3
Prairie Falcon 0 2 4
Mississippi Kite 0 0 0
Unknown Accipitrine 1 9 15
Unknown Buteo 1 2 5
Unknown Falcon 1 3 4
Unknown Eagle 0 0 0
Unknown Raptor 1 3 4
Total: 165 1029 1582


Observation start time: 08:00:00
Observation end time: 18:30:00
Total observation time: 10.5 hours
Official Counter Emma Riley, Soren Zappia , Soren Zappia
Observers: Marina Prado-Echeagaray



Visitors:
It was a lively day on the ridge today with 23 visitors that came by as well as a group from Aiken Audubon, one of our partners! We really enjoyed getting to share migration with everyone that visited today. Thank you to Andrew Jensen, Lauren Friesen, and Julie Eyden for volunteering their time today.

Weather:
Today was a classic spring day on the ridge. We had warm temperatures that got up to about 25 degrees Celsius, winds that varied in direction but predominantly came from the E/NE, and virtually no cloud cover. A haze was present all day making distant birds difficult to see.

Raptor Observations:
Today was our biggest day of the season so far! Migrants started coming through in the 0800 MST hour and continued through the 1800 hour, making for a 10+ hour day of birds. We had our highest count of Broad-winged Hawks, Osprey, and American Kestrels today. The day started with birds already being distant over the W ridge and continued with that pattern for most of the day. Morning highlights included a small kettle of 3 Broad-winged Hawks, including one dark-morph!, over Mt Morrison. Osprey were seen E, W, and just N of us today. Migration slowed down during the peak of the day before picking back up in the early evening. A kettle of 10 Turkey Vultures showed up just S of the count site with 3 American Kestrels in the 1600 MST hour. The Turkey Vultures moved N before coming back S about 15 minutes later, but they put us onto the first of a great push of American Kestrels. Our late day Kestrel push was low over the W ridge with 2-3 birds being seen in one field of view at a time. As we counted endless American Kestrels, a low buteo was spotted just W of the ridge. This bird ended up being a beautiful adult Broad-winged Hawk that circled low directly overhead of us, surely giving us the best looks of the season for this species. Warblers are slowly showing up at the site with Yellow-rumped Warblers and a few calling warblers in-flight that we weren't able to get a solid ID on. We also had a female Common Merganser come over as we were leaving the site for the evening.

Non-raptor Observations:
Common Merganser 1, White-throated Swift 64, Broad-tailed Hummingbird 3, Mourning Dove 2, Double-crested Cormorant 11, American White Pelican 3, Say's Phoebe 1, Steller's Jay 1, Woodhouse's Scrub Jay 1, Black-billed Magpie 5, Common Raven 4, Black-capped Chickadee 1, Violet-green Swallow 2, American Bushtit 4, Rock Wren 1, European Starling 1, Pine Siskin 2, Spotted Towhee 2, Western Meadowlark 2, Common Grackle 3, Yellow-rumped Warbler (Audubon's) 4, warbler sp. 3

Predictions:
Temperatures will be higher tomorrow but cloud cover is predicted (fingers crossed) for the afternoon. Winds continue out of the E.


Report submitted by Official Counter of the day shown above (dinoridgehw@gmail.com)
Dinosaur Ridge - Denver Field Ornithologists information may be found at: www.dinosaurridgehawkwatch.org
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]
Count data submitted via Trektellen.org - [Project Details]




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. American Goshawk is uncommon but also counted each season. Non-raptor
species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane,
White-throated Swift, and American White Pelican. Birders of any skill level are
always welcome. The hawk watch at Dinosaur Ridge is staffed by Hawk Counter(s)
and volunteers from March through early May.

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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[cobirds] Save the Aurora Reservoir from Fracking

Hi all. There is a final hearing on Tuesday over a very large fracking project that will be placed near the Aurora Reservoir. I'm sure this would affect the drinking water of members of this email list and would in general affect the wildlife we all care about at the reservoir. Link is here for a zoom link and some other info to attend the virtual hearing:
State Sunlight-Long Final Re-Hearing - Save The Aurora Reservoir

Best,
Caoimhin

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Saturday, 18 April 2026

[cobirds] Dinosaur Ridge - Denver Field Ornithologists (18 Apr 2026) 93 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Apr 18, 2026
Species Day's Count Month Total Season Total
Black Vulture 0 0 0
Turkey Vulture 6 112 139
Osprey 5 25 31
Bald Eagle 3 10 23
Northern Harrier 2 20 32
Sharp-shinned Hawk 10 71 92
Cooper's Hawk 9 118 170
American Goshawk 0 0 1
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 2 8 8
Red-tailed Hawk 10 152 400
Rough-legged Hawk 0 0 0
Swainson's Hawk 6 13 13
Ferruginous Hawk 1 6 15
Golden Eagle 0 1 8
American Kestrel 39 310 449
Merlin 0 2 5
Peregrine Falcon 0 1 3
Prairie Falcon 0 2 4
Mississippi Kite 0 0 0
Unknown Accipitrine 0 8 14
Unknown Buteo 0 1 4
Unknown Falcon 0 2 3
Unknown Eagle 0 0 0
Unknown Raptor 0 2 3
Total: 93 864 1417


Observation start time: 07:15:00
Observation end time: 18:00:00
Total observation time: 10 hours
Official Counter Emma Riley, Soren Zappia , Soren Zappia
Observers: Laura Farnsworth



Visitors:
44 visitors, not including field trip participants. It was our busiest day yet for visitors with a DFO field trip led by Ajit and Liza Antony in the morning, and a few birders and hikers throughout the day. We also met two groups of 10 visitors from England, who work as guards at Buckingham Palace - they seemed to be enjoying Colorado! Thank you to Steve Price for volunteering at the hawkwatch today, and to Janet Peters, David Suddjian, and Mike Ames for submitting their counts to our Raptorthon. There is still time to submit lists from within an 8 mile radius of the hawkwatch - share with the user "dinoridgehawkwatch" on eBird. Results to come soon!

Weather:
We returned to sunny skies today with temperatures starting near freezing but reaching the low 60s F by the end of the day, with yesterday's snow nearly completely melted by the late afternoon. Winds were light and variable, starting as WNW in the early morning but shifting more east in the remainder of the day. In the final two hours of the count, cloud cover increased gradually until there was a thin, wispy blanket over most of the sky.

Raptor Observations:
Today was our Raptorthon fundraiser, and we were lucky to see 13 raptor species at the ridge today, including local birds! We had a good push of birds, with our highest daily total so far this season for Ospreys, Bald Eagles, and Swainson's Hawks. Most birds were on the west ridge or overhead, but we saw 2 Osprey past by below eye level on the east. The morning was busy, but the midday was quieter before activity resumed in the afternoon. Highlights of the day include 2 Broad-winged Hawks, a surprising late Harlan's Red-tailed Hawk, and a dark morph Ferruginous Hawk. Bald Eagle activity was also quite high today, with three migrants and many local birds. An adult Bald Eagle flew south low overhead, giving amazing views to our morning field trip. We also had good numbers of American Kestrels throughout the day. While a few birds were low close to the ridge, many remained high overhead or far to the west even in the late hours of the count. We also saw our first Yellow-rumped Warbler of the season today, Western and Mountain Bluebirds, and many swifts and swallows.

Non-raptor Observations:
White-throated Swift 48, Broad-tailed Hummingbird 3, Mourning Dove 1, Ring-billed Gull 1, Double-crested Cormorant 1, American White Pelican 4, Northern Flicker 1, Say's Phoebe 1, Woodhouse's Scrub Jay 2, Black-billed Magpie 1, Common Raven 4, Black-capped Chickadee 1, Tree Swallow 3, Violet-green Swallow 4, Barn Swallow 1, swalow sp. 2, Mountain Bluebird 6, Western Bluebird 6, Townsend's Solitaire 1, American Robin 3, House Finch 1, Pine Siskin 4, Spotted Towhee 2, Western Meadowlark 2, Red-winged Blackbird 2, Yellow-rumped Warbler (Audubon's) 1

Predictions:
Tomorrow, warmer temperatures are predicted from the mid 50s to low 70s F. Expect sunny skies and winds from the NE. Trails were dry on our descent today. Watch for rattlesnakes as warm temperatures return.


Report submitted by Official Counter of the day shown above (dinoridgehw@gmail.com)
Dinosaur Ridge - Denver Field Ornithologists information may be found at: www.dinosaurridgehawkwatch.org
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]
Count data submitted via Trektellen.org - [Project Details]




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. American Goshawk is uncommon but also counted each season. Non-raptor
species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane,
White-throated Swift, and American White Pelican. Birders of any skill level are
always welcome. The hawk watch at Dinosaur Ridge is staffed by Hawk Counter(s)
and volunteers from March through early May.

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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Friday, 17 April 2026

[cobirds] Dinosaur Ridge - Denver Field Ornithologists (17 Apr 2026) 4 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Apr 17, 2026
Species Day's Count Month Total Season Total
Black Vulture 0 0 0
Turkey Vulture 0 106 133
Osprey 0 20 26
Bald Eagle 0 7 20
Northern Harrier 1 18 30
Sharp-shinned Hawk 0 61 82
Cooper's Hawk 0 109 161
American Goshawk 0 0 1
Red-shouldered Hawk 0 0 0
Broad-winged Hawk 0 6 6
Red-tailed Hawk 0 142 390
Rough-legged Hawk 0 0 0
Swainson's Hawk 0 7 7
Ferruginous Hawk 0 5 14
Golden Eagle 0 1 8
American Kestrel 3 271 410
Merlin 0 2 5
Peregrine Falcon 0 1 3
Prairie Falcon 0 2 4
Mississippi Kite 0 0 0
Unknown Accipitrine 0 8 14
Unknown Buteo 0 1 4
Unknown Falcon 0 2 3
Unknown Eagle 0 0 0
Unknown Raptor 0 2 3
Total: 4 771 1324


Observation start time: 09:00:00
Observation end time: 17:00:00
Total observation time: 4 hours
Official Counter Soren Zappia, Soren Zappia
Observers:



Visitors:
3 visitors. We had a family of birders from Kentucky visit the ridge in the afternoon - they appreciated a Black-billed Magpie that had landed close by.

Weather:
The snow hadn't started when the count began, but it was visible to the north and east. Skies were overcast and winds were light to moderate from the east. Snow began around 9:20 MST. Visibility at first was good but dropped to near 2 km by the end of the hour, and both the west ridges and green mountain disappeared into the snow. The wind intensified a bit, and visibility continued to drop to less than 0.5 km until the count was suspended due to low visibility. The count resumed at 15:00 MST, and soon after a very light snow fell for around 30 minutes. Fog in the east and south limited view of the west ridge, and Mt Morrison disappeared into the fog, but Green Mountain was clear. The sky was mostly cloudy with a few holes in the cloud cover to the north and east developing in the final hour. Winds remained light from the east.

Raptor Observations:
Despite the snowy day, we had a few migrants in the first hour. As the snow was starting, a Northern Harrier flew low on the west just above the ridgeline, and an American Kestrel passed by close on the east. At the end of the first hour when snow was intensifying, a pair of AKs flew by low in the valley. No migrants were seen in the following hour before the count was suspended. In the afternoon, no migrants were observed, although we spotted a local Swainson's Hawk and young Bald Eagle. Mountain Bluebirds flew south past the ridge soon after the snow began, and flocks of American Robins and Mountain Bluebirds were flitting about the ridge in the morning. A Townsend's Solitaire was observed in the afternoon.

Non-raptor Observations:
Broad-tailed Hummingbird 1, Mourning Dove 1, Double-crested Cormorant 1, Northern Flicker 1, Black-billed Magpie 2, American Crow 1, Common Raven 1, Mountain Bluebird 21, Townsend's Solitaire 1, American Robin 18, Spotted Towhee 1, Western Meadowlark 1

Predictions:
Tomorrow is our Raptorthon celebration, and our team will be attempting to find as many species as possible on the ridge and close nearby. We hope you can join us! Read more here: https://www.hawkmigration.org/product/the-mile-high-raptors/ It should be a nice and cool day with temperatures in the mid 30s to low 50s F. Sunny skies are predicted with moderate to light WNW winds shifting to light NE in the afternoon. Expect muddy trails from today's snow.


Report submitted by Official Counter of the day shown above (dinoridgehw@gmail.com)
Dinosaur Ridge - Denver Field Ornithologists information may be found at: www.dinosaurridgehawkwatch.org
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]
Count data submitted via Trektellen.org - [Project Details]




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. American Goshawk is uncommon but also counted each season. Non-raptor
species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane,
White-throated Swift, and American White Pelican. Birders of any skill level are
always welcome. The hawk watch at Dinosaur Ridge is staffed by Hawk Counter(s)
and volunteers from March through early May.

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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Re: [cobirds] White Ibis, Arvada

A link to the video showing the White Ibis: 

Good birding!
Van Rudd
Louisville, CO

On Fri, Apr 17, 2026 at 12:52 PM Paula Hansley <plhansley@gmail.com> wrote:
There is a video of the ibis walking in a pond at ~6 PM April 15 on the Channel 9 website.  The video is accompanied by commentary by Kyle Clark.

Paula Hansley
Louisville 

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[cobirds] White Ibis, Arvada

There is a video of the ibis walking in a pond at ~6 PM April 15 on the Channel 9 website.  The video is accompanied by commentary by Kyle Clark.

Paula Hansley
Louisville 

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[cobirds] White Ibis

The White Ibis is now at a retention pond in Arvada, according to my Nextdoor website. I assume it’s the same one— headed home?

Not sure where the pond is located but I will post if I find out.

Paula Hansley
Louisville 

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