[cobirds] Dinosaur Ridge - Denver Field Ornithologists (02 Apr 2026) 38 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Apr 02, 2026
Species	Day's Count	Month Total	Season Total
Black Vulture	0	0	0
Turkey Vulture	5	13	40
Osprey	0	3	9
Bald Eagle	1	2	15
Northern Harrier	0	1	13
Sharp-shinned Hawk	2	6	27
Cooper's Hawk	12	15	67
American Goshawk	0	0	1
Red-shouldered Hawk	0	0	0
Broad-winged Hawk	0	0	0
Red-tailed Hawk	16	32	280
Rough-legged Hawk	0	0	0
Swainson's Hawk	0	0	0
Ferruginous Hawk	0	0	9
Golden Eagle	0	0	7
American Kestrel	2	10	149
Merlin	0	0	3
Peregrine Falcon	0	0	2
Prairie Falcon	0	0	2
Mississippi Kite	0	0	0
Unknown Accipitrine	0	0	6
Unknown Buteo	0	0	3
Unknown Falcon	0	0	1
Unknown Eagle	0	0	0
Unknown Raptor	0	0	1
Total:	38	82	635

Observation start time:	09:00:00
Observation end time:	17:00:00
Total observation time:	8 hours
Official Counter	Emma Riley, Soren Zappia
Observers:

Visitors:
We had a great group from Denver Audubon up this morning for a few hours and they got to experience a great taste of migration. We had a total of 13 other visitors today. Thank you to Charlene Warneke for bringing the counters lunch today… you're the best. Thank you to Dale Campau and Ryan Gannon for volunteering their time to help us spot birds today!

Weather:
The sun was out all day today with minimal cloud cover present. Some scattered clouds helped us spot birds but didn't provide much relief from that strong Colorado sun. Winds were light from the E for most of the day before switching NW and picking up to about 30 km/h in the last hour.

Raptor Observations:
Migration was off with a bang this morning, putting on a show for the field trip! We had overhead accipitrines, Red-tailed Hawks, and Turkey Vultures for everyone to enjoy. After the first two hours of the day birds slowed down a bit and got higher in their flight lines. Most birds came overhead or west of us today. We had a nice presence of accipitrines all day. American Kestrels were missed today. Local Red-tailed Hawks were especially aggressive today hounding any migrants that came through. Turkey Vultures continue to move N and S and N and S all day!

Non-raptor Observations:
White-throated Swift 3, Broad-tailed Hummingbird 1, Ring-billed Gull 1, Woodhouse's Scrub Jay 1, Black-billed Magpie 2, Common Raven 2, Black-capped Chickadee 2, American Bushtit 3, House Finch 3, Eurasian Siskin 1, Spotted Towhee 1

Predictions:
Winds are predicted to be strong tomorrow but hopefully we still have birds moving. If you are planning on coming up, bring an extra layer!

---

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] Dinosaur Ridge - Denver Field Ornithologists (01 Apr 2026) 44 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Apr 01, 2026
Species	Day's Count	Month Total	Season Total
Black Vulture	0	0	0
Turkey Vulture	8	8	35
Osprey	3	3	9
Bald Eagle	1	1	14
Northern Harrier	1	1	13
Sharp-shinned Hawk	4	4	25
Cooper's Hawk	3	3	55
American Goshawk	0	0	1
Red-shouldered Hawk	0	0	0
Broad-winged Hawk	0	0	0
Red-tailed Hawk	16	16	264
Rough-legged Hawk	0	0	0
Swainson's Hawk	0	0	0
Ferruginous Hawk	0	0	9
Golden Eagle	0	0	7
American Kestrel	8	8	147
Merlin	0	0	3
Peregrine Falcon	0	0	2
Prairie Falcon	0	0	2
Mississippi Kite	0	0	0
Unknown Accipitrine	0	0	6
Unknown Buteo	0	0	3
Unknown Falcon	0	0	1
Unknown Eagle	0	0	0
Unknown Raptor	0	0	1
Total:	44	44	597

Observation start time:	09:00:00
Observation end time:	14:30:00
Total observation time:	5.5 hours
Official Counter	Soren Zappia
Observers:

Visitors:
8 Visitors. Two birders came in the morning to enjoy the migration and watched the TVs circle right overhead. Thank you to Janet Peters and Kathie Moses for their help today!

Weather:
The morning was cool and overcast, with winds light from the east intensifying from the north as the rain approached. In the late morning, rain was visible in the north and west but avoided the ridge until a light drizzle started in the early afternoon. The rain intensified a bit before pausing for around 15 minutes, before picking up again for around 45 mins until the count was ended at 14:30 MST due to rain with continuing rain in the forecast.

Raptor Observations:
Despite the shortened day, there was a lot of activity, with many birds low past the ridge or to the west. Thermals seemed few and far between with Red-tailed Hawks often flapping near continuously until they reached one. At one point, we had 7 RTs at once on the bare slope - some local and some migrants. A kettle of 6 Turkey Vultures were originally spotted over Green Mountain, but soared directly overhead before streaming north. A highlight of the day was three total Osprey on the west side, two within a few minutes of each other. There was a steady stream of activity until right before the light rain started - we had a final push of three American Kestrels and a Cooper's Hawk all at eye level on the east. The light rain seemed to suppress even local activity, but when the rain let up for a brief period, we had a burst of activity, with birds low and close by. After the rain continued and intensified, the activity came to a halt once again.

Non-raptor Observations:
Northern Flicker 2, Black-billed Magpie 1, Common Raven 1, American Robin 2, House Finch 1, American Goldfinch 1, Pine Siskin 5, Spotted Towhee 1, Western Meadowlark 1

Predictions:
Tomorrow, expect sunny skies with temperatures warming up from the mid 50s F in the AM to a high of 70 F in late afternoon. Winds are predicted from the SW, increasing from mild to moderate as the day progresses. Bring layers and expect that trails may be muddy from today's rain.

---

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] Next BIRD BOMBS Habitat Blast: At the Feet of the Foothills Apr 23

Hi CoBirders,

You can register now for the DFO's next BIRD BOMBS explosion Habitat Blast: At the Feet of the Foothills, set to go off on April 23 at 7 pm (MT). Join this free Zoom webinar and learn about the bird communities of the hogback zone and the lowest foothill slopes. We'll focus on the Front Range and Rampart Range region, but the presentation will apply to similar settings elsewhere in Colorado, too.  This strip of Colorado includes some of our most beloved parks and birding spots.  

View the whole BIRd BOMBS video library here and on the Denver Field Ornithologists' Youtube channel. 

David Suddjian

Littlton, CO

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[cobirds] Dinosaur Ridge - Denver Field Ornithologists (31 Mar 2026) 22 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Mar 31, 2026
Species	Day's Count	Month Total	Season Total
Black Vulture	0	0	0
Turkey Vulture	2	27	27
Osprey	2	6	6
Bald Eagle	0	13	13
Northern Harrier	0	12	12
Sharp-shinned Hawk	2	21	21
Cooper's Hawk	0	52	52
American Goshawk	0	1	1
Red-shouldered Hawk	0	0	0
Broad-winged Hawk	0	0	0
Red-tailed Hawk	5	248	248
Rough-legged Hawk	0	0	0
Swainson's Hawk	0	0	0
Ferruginous Hawk	0	9	9
Golden Eagle	1	7	7
American Kestrel	10	139	139
Merlin	0	3	3
Peregrine Falcon	0	2	2
Prairie Falcon	0	2	2
Mississippi Kite	0	0	0
Unknown Accipitrine	0	6	6
Unknown Buteo	0	3	3
Unknown Falcon	0	1	1
Unknown Eagle	0	0	0
Unknown Raptor	0	1	1
Total:	22	553	553

Observation start time:	09:00:00
Observation end time:	17:00:00
Total observation time:	8 hours
Official Counter	Emma Riley
Observers:

Visitors:
We had 6 visitors to the ridge today, including Bill Hancock and his wife Lindsay from Maine. We also had a small homeschool group from Denver Audubon come up in the morning to learn about the hawk watch and raptor migration. While we didn't have too many birds flying, they did get to see a close Red-tailed Hawk a few times, and learned a lot! Thanks to Bill Young and Chip Dawes for volunteering their time today to help spot birds.

Weather:
Temperatures were much lower today than yesterday. Clouds were heavy and covered the sky all day. For a few moments the sun managed to poke out giving us some warmth. Winds switched directions starting from the E, moving NNW, and ending back out of the E at the end of the day.

Raptor Observations:
Raptor activity was minimal in the morning as it has been on some of our slower days recently. A couple of birds moved along the western ridge before the afternoon. In the afternoon birds picked up a bit, with many of them coming low overhead. American Kestrels have had a great presence already this year and made up just about half of our count for the day today. The highlight of the day was in the last hour when an Osprey came overhead no more than 20 m above us. A second Osprey was seen taking a low line over the Morrison ridge not 10 minutes later. Non-raptor activity was also low today with some of our local birds only singing a few times throughout the day. We did have 4 Double-crested Cormorants move N along Green Mountain.

Non-raptor Observations:
Broad-tailed Hummingbird 1, Double-crested Cormorant 4, Northern Flicker 2, American Crow 1, Common Raven 2, Black-capped Chickadee 1, American Bushtit 3, Townsend's Solitaire 1, American Robin 1, Spotted Towhee 1, Western Meadowlark 2

Predictions:
Thunderstorms (so early!) are predicted for tomorrow afternoon. We are hoping to get some birds counted before that happens!

---

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] Re: Question about Cobirds.org

Good morning all,

Just wanted to extend a big thanks to Chuck and Peter Burke for their very quick responses to my initial email inquiry (both replied within minutes of each other). They both were immediately on top of it and ready to help. Thank you!

And an apology for the confusion about the question I asked, and for not clarifying it directly to the listgroup earlier. I didn't notice that some of the responses were also sent to the group, not just to me.  Sorry about that. 

Best,

Thomas Heinrich

Boulder, CO

Nyctea@aol.com

On Mar 31, 2026, at 7:02 AM, Charles Hundertmark <chundertmark8@gmail.com> wrote:

For clarification, info@cobirds.org is the email address for questions to Colorado Field Ornithologists (CFO). Emails to that address are viewed by members of the CFO board who read those emails and respond. Thomas Heinrich's question posted to Cobirds on March 29 related to an issue with CFO. It is being addressed internally by CFO board members. A separate response has been sent to Mr. Heinrich.

Chuck Hundertmark, President

Colorado Field Ornithologists

On Monday, March 30, 2026 at 7:54:38 AM UTC-6 John Rawinski wrote:

Hi Thomas:  I still do as part of checking in on topics, bird sightings etc. Since I live in the San Luis Valley, it is often my only connection to Statewide topics and discussions. 

To be honest, I do check some FB pages, but have become increasingly less enamored with all the "stuff" FB throws at you. I also use eBird for recent site visits and I enjoy some Colorado Bird Photography sites. So I use a lot of tools in the box. 

As examples, I have enjoyed reading the Cassia Crossbill comments, as well as Eastern vs Western Warbling Vireo topics on COBIRDS. That is certainly something I am not going to find on most FB pages. The dialogues have been insightful, civil, (thanks David!) and diverse.  

For close to 30 years, I managed a San Luis Valley Birding Network, an info line for bird observations. This consisted of about 110 local birders connected on an email list, but was not limited to local birders. Some front range birders used it as a connection to the SLV. The network helped connect us isolated birders in the San Luis Valley with exciting and local bird news. Oftentimes, a SLV post was shared with COBIRDS. We often did big day events, Migratory Spring Bird Counts, and fundraisers for local conservation groups like Rio Grande Headwaters Land Trust, Food Banks and others. 

After at least 30 years, I recently had to surrender it to FB so I could focus on health issues and other life things. So that is my perspective on it. 

Spring is in the air and new birds are arriving daily. Cranes are but a memory, and a great year it was. But onto the greening thickets, smells of fresh spring, and the new bird arrivals!

John Rawinski

Monte Vista, CO

On Sunday, March 29, 2026 at 12:11:04 PM UTC-6 Thomas Heinrich wrote:

Who reads and/or responds to emails sent to in...@cobirds.org?

Thanks,

Thomas Heinrich
Boulder, CO
Nyc...@aol.com

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[cobirds] Re: Question about Cobirds.org

For clarification, info@cobirds.org is the email address for questions to Colorado Field Ornithologists (CFO). Emails to that address are viewed by members of the CFO board who read those emails and respond. Thomas Heinrich's question posted to Cobirds on March 29 related to an issue with CFO. It is being addressed internally by CFO board members. A separate response has been sent to Mr. Heinrich.

Chuck Hundertmark, President

Colorado Field Ornithologists

On Monday, March 30, 2026 at 7:54:38 AM UTC-6 John Rawinski wrote:

Hi Thomas:  I still do as part of checking in on topics, bird sightings etc. Since I live in the San Luis Valley, it is often my only connection to Statewide topics and discussions. 

To be honest, I do check some FB pages, but have become increasingly less enamored with all the "stuff" FB throws at you. I also use eBird for recent site visits and I enjoy some Colorado Bird Photography sites. So I use a lot of tools in the box. 

As examples, I have enjoyed reading the Cassia Crossbill comments, as well as Eastern vs Western Warbling Vireo topics on COBIRDS. That is certainly something I am not going to find on most FB pages. The dialogues have been insightful, civil, (thanks David!) and diverse.  

For close to 30 years, I managed a San Luis Valley Birding Network, an info line for bird observations. This consisted of about 110 local birders connected on an email list, but was not limited to local birders. Some front range birders used it as a connection to the SLV. The network helped connect us isolated birders in the San Luis Valley with exciting and local bird news. Oftentimes, a SLV post was shared with COBIRDS. We often did big day events, Migratory Spring Bird Counts, and fundraisers for local conservation groups like Rio Grande Headwaters Land Trust, Food Banks and others. 

After at least 30 years, I recently had to surrender it to FB so I could focus on health issues and other life things. So that is my perspective on it. 

Spring is in the air and new birds are arriving daily. Cranes are but a memory, and a great year it was. But onto the greening thickets, smells of fresh spring, and the new bird arrivals!

John Rawinski

Monte Vista, CO

On Sunday, March 29, 2026 at 12:11:04 PM UTC-6 Thomas Heinrich wrote:

Who reads and/or responds to emails sent to in...@cobirds.org?

Thanks,

Thomas Heinrich
Boulder, CO
Nyc...@aol.com

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[cobirds] Dinosaur Ridge - Denver Field Ornithologists (30 Mar 2026) 11 Raptors

Dinosaur Ridge - Denver Field Ornithologists
Golden, Colorado, USA

Daily Raptor Counts: Mar 30, 2026
Species	Day's Count	Month Total	Season Total
Black Vulture	0	0	0
Turkey Vulture	1	25	25
Osprey	0	4	4
Bald Eagle	0	13	13
Northern Harrier	0	12	12
Sharp-shinned Hawk	2	19	19
Cooper's Hawk	3	52	52
American Goshawk	0	1	1
Red-shouldered Hawk	0	0	0
Broad-winged Hawk	0	0	0
Red-tailed Hawk	4	243	243
Rough-legged Hawk	0	0	0
Swainson's Hawk	0	0	0
Ferruginous Hawk	0	9	9
Golden Eagle	0	6	6
American Kestrel	1	129	129
Merlin	0	3	3
Peregrine Falcon	0	2	2
Prairie Falcon	0	2	2
Mississippi Kite	0	0	0
Unknown Accipitrine	0	6	6
Unknown Buteo	0	3	3
Unknown Falcon	0	1	1
Unknown Eagle	0	0	0
Unknown Raptor	0	1	1
Total:	11	531	531

Observation start time:	09:00:00
Observation end time:	17:00:00
Total observation time:	8 hours
Official Counter	Emma Riley
Observers:

Visitors:
We had a total of 12 visitors on the ridge today, including a few who stayed for 30 minutes to over an hour to see migrants! Thanks to Clay Gibson and Mike Serruto for their continued support and company on Mondays.

Weather:
Temperatures were in the high 20s Celsius all day with scattered clouds. Weather was overall pleasant for most of the day short of a few strong wind gusts. Winds were highly variable in direction and speed, from E winds that could barely be felt, to N and SW winds that came with some good gusts. Barometric pressure dropped quicker than normal throughout the day today.

Raptor Observations:
Migration was heavily stunted today for whatever reason. The winds? Maybe. A few accipitrines, Red-tailed Hawks, and Turkey Vultures made up our count today. There was no clear line that these birds were taking. The local Turkey Vultures have officially moved in. First thing today we had a group of 10 kettle over Green Mountain, move W to the Dakota Hogback, move NW to near Mother Cabrini, and head SW. Classic. We also had a dark-morph Red-tailed Hawk fly perfectly N before getting mobbed by a local RT, making that bird tuck tail and go S again. Weird movements today. Passerine and non-raptor activity was also very still today!

Non-raptor Observations:
American White Pelican 1, Woodhouse's Scrub Jay 1, Black-billed Magpie 1, Common Raven 3, Black-capped Chickadee 1, American Bushtit 2, Spotted Towhee 2, Western Meadowlark 1

Predictions:
Temperatures drop tomorrow and winds shift E. I'm hoping for a bit more of a push tomorrow before possible precipitation on Wednesday.

---

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]

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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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