Saturday, 5 September 2026

[cobirds] Mount Zion Hawk Watch at Windy Saddle Park (05 Sep 2026) 18 Raptors

Mount Zion Hawk Watch at Windy Saddle Park
Golden, Greater Denver, Colorado, USA

To see hourly weather data and details of migrant raptors, look up this watch at hawkcount.org. This is a new raptor migration site identified and designated in mid-September 2024. This is Colorado's 1st fall hawk watch site, and the second hawk watch in Colorado. To get to the site which is along Lookout Mountain Rd. in Golden, enter either Windy Saddle Park or Mount Zion into Google Maps on your favorite navigation app, or enter the coordinates 39.7368,-105.2454. From the parking lot ascend the stone steps to the watch site. EVERYONE IS WELCOME TO THE HAWK WATCH TO ENJOY THE SPECTACLE OF RAPTOR MIGRATION, EVEN IF YOU KNOW NOTHING ABOUT IDENTIFYING RAPTORS IN FLIGHT. We will help you to learn Raptor ID if you are interested. See https://groups.google.com/g/cobirds/c/Oznn4uc6MBk

Daily Raptor Counts: Sep 05, 2026
Species Day's Count Month Total Season Total
Black Vulture 0 0 0
Turkey Vulture 6 19 124
Osprey 1 6 8
Bald Eagle 0 0 1
Northern Harrier 0 0 1
Sharp-shinned Hawk 1 1 4
Cooper's Hawk 4 6 20
American Goshawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 5 38 195
Rough-legged Hawk 0 0 0
Swainson's Hawk 0 4 19
Ferruginous Hawk 0 0 0
Golden Eagle 0 0 1
American Kestrel 1 1 21
Merlin 0 0 0
Peregrine Falcon 0 0 1
Prairie Falcon 0 0 1
Mississippi Kite 0 0 0
Unknown Accipitrine 0 0 0
Unknown Buteo 0 0 1
Unknown Falcon 0 0 0
Unknown Eagle 0 0 0
Unknown Raptor 0 0 1
Total: 18 75 398


Observation start time: 08:30:00
Observation end time: 12:30:00
Total observation time: 4 hours
Official Counter Ajit Antony
Observers: Liza Antony



Visitors:
Many hikers with many questions today. We were able to show a group 3 TV soaring, and explained how that conserves energy for migration. A family with two small children I showed different more distant TVs, and I told them they probably couldn't see them without binoculars, and showed perched on one of the antenna through my scope, their son aged 7 years said he could see them (without optics), his father told us that he was probably lying, I explained that children have very good eyesight and our grandchildren can find hawks that I can't see! A young man who had just moved to Golden 2 weeks ago was looking at the "river" below us, I explained it was Clear Creek and this was Clear Creek Canyon in front of us to the north, he said he was planning to drive there tomorrow, I told him it led to Central City, and because his partner said she was an artist, told them that they have a good opera there, unfortunately the season was over. Because they asked I told them the Denver has a vibrant arts scene, and that the Colorado Shakespeare Festival was excellent, but their season was over too. Comments from hikers included Awesome, That's so cool, when we told them what we were doing. Someone wanted to know whether we have a team counting here, and I pointed to Liza and myself and said That's it. I explained we had started August 1st, when most hawk watches start in September, in order to discover whether Swainson's Hawk migrate early, here. I explained as of yesterday there were 64 hawk watches reporting to Hawkcount, the huge numbers of raptor seen at the 2 Veracruz hawk watch sites.

Weather:
The usual wildfire smoke over Denver which cleared up by the 12 MDT hour, very hot today, a lot of cumulus clouds and later cirrus clouds, light winds from the East, though the winds aloft were predicted to come from the North and the Northeast.

Raptor Observations:
Today was a very strange migration day here, in that there were no local raptors in flight for a long time. The first migrant at 9:51 a.m. was an RT very high and far to the South, so we looked higher to the south and to the east and we had good cloud cover to see them by, but we couldn't find any. Liza was following an OS with her scope and it took a long time to migrate and she managed to find a TV and a CH as scope birds fortuitously. The Soaring Forecast of the NWS predicted lift of 20 ft per second with thermal height of 13,832 ft AGL which is over a mile above this watch. Non-migrant raptors: RT 5, TV 9.

Non-raptor Observations:
The 2 paragliders at 10:45 a.m. had no lift, but the ones over an hour later had very good lift. STJA 1, WEBL 2, SPTO 1, CORA 6.

Predictions:
A slight chance of showers between noon and 3 pm. Mostly sunny, with a high near 91. Light and variable wind becoming east northeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.


Report submitted by Ajit Antony (aiantony@earthlink.net)
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]




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[cobirds] Bird Conservancy of the Rockies - Barr Lake Banding Report, 9/5/26

A nice, if relatively quiet, Saturday at the Barr Lake Station.  The weekends are an opportunity to share "our" birds with several groups of enthusiastic visitors of all ages, and lead to interesting and thought-provoking conversations.  Thanks to all who visited today!

Banded 32 birds today; Wilson's Warblers continue to be the primary species.  Had only 7 recaps today (compared with 25 yesterday).  Here's today's breakdown of new birds:

Western Wood-pewee 1
Least Flycatcher 1
Northern House Wren 3
Virginia's Warbler 1
Yellow Warbler 3
Wilson's Warbler 20
Chipping Sparrow 1
Lincoln's Sparrow 2

We are open Tuesday through Saturday, weather permitting, through October 23.  Most weekday mornings there is a visitor session from 7:30 to 8:30, and on the weekends there are sessions at 8, 9 and 10 a.m.  Reservations are needed; here is the link.   Please join us......It is a great year to visit Barr!

Meredith McBurney
Bander, Barr Lake Station
Bird Conservancy of the Rockies

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[cobirds] Chico Basin Ranch Banding Station Report-Bird Conservancy of the Rockies-September 5, 2026

Another quiet day at the banding station. However, you never know what species show up. We banded a Black-and-White Warbler (Hatching year male) which was the first of the year. All the recaptures today were over 1.3grams or more since their initial banding. A Northern House Wren banded last fall was captured today. Good to see returning birds surviving. 

20 New Banded Birds
Wilson's Warbler- 5
Yellow Warbler- 1
Orange-crowned Warbler- 1
Black-and-white Warbler- 1
MacGillivray's Warbler- 2
Red-breasted Nuthatch- 1
N. House Wren- 4
Cassin's Vireo- 1
Yellow-breasted Chat- 2
Western Tanager- 1
Brown Thrasher- 1

3 Recaptures- banded this season and captured again
Brown Thrasher
Swainson's Thrush- 2

1 Return-banded -banded last September as a hatching year bird
N. House Wren

The Banding Station will be closed tomorrow and reopen on Monday at sunrise until @ 11:30 AM. If interested in visiting the ranch tomorrow or next week, please register online at the Aiken Audubon website www.aikenaudubon.com

Have a good Labor Day!

Julie Shieldcastle, Bander
Chico Basin Ranch
Bird Conservancy of the Rockies

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[cobirds] Re: Clark’s Nutcrackers Alamosa

Nice report Dan. They have been especially visible in lower elevations and around the pinyon pine zone. See my Mtn Home reports and there have been plenty there as well. 

I live in the Valley flats, about 8 miles from the nearest pinyon tree and near Monte Vista. Yet twice last week I had small flocks of Pinyon Jays visit my backyard trees. I have a rare source of water at my place, and it has drawn all sorts of birds in. Also I have a pretty good seed crop of various trees as well. To see pinyon jays this far into the Valley means they are not finding basic needs in the foothills. We have not had significant rain forever it seems. So it may be a combination of water and food that they seek. Thanks for the report. 

John Rawinski
Monte Vista, CO

On Sunday, August 30, 2026 at 11:06:35 AM UTC-6 string...@icloud.com wrote:
Yesterday 8/29 I drove up the road to Zapata Falls in Alamosa County, looking for Pinyon Jays. Near the top, just under 9,000’ the first birds I saw were two Clark’s Nutcrackers, then three more, then two of them going at it with a Sharp-shinned Hawk…within a minute I was able to see ten in the air in a wide circle of view. At every pull-off I saw one or two more, and their raucous calls were prevalent. The Pinyon Pine cones weren’t open, mostly greenish and sap-covered, and the birds were landing tree-top, pecking them apart. The lower I drove back towards the valley floor the less I saw, but at my last stop at 8400’ I was surprised to count eleven. I hadn’t seen this concentration of Clark’s Nutcrackers before, perhaps food sources up higher are sparse. I didn’t feel like getting scolded by eBird, so I’ll just say here, my count, considering I saw some of the birds more than once, was 66.

One of the Clark’s single-note calls is similar to Pinyon Jay, a fun challenge. I did see one small flock of about 6 PIJA.

Dan Stringer
Larkspur, CO

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Friday, 4 September 2026

[cobirds] Mount Zion Hawk Watch at Windy Saddle Park (04 Sep 2026) 21 Raptors

Mount Zion Hawk Watch at Windy Saddle Park
Golden, Greater Denver, Colorado, USA

To see hourly weather data and details of migrant raptors, look up this watch at hawkcount.org. This is a new raptor migration site identified and designated in mid-September 2024. This is Colorado's 1st fall hawk watch site, and the second hawk watch in Colorado. To get to the site which is along Lookout Mountain Rd. in Golden, enter either Windy Saddle Park or Mount Zion into Google Maps on your favorite navigation app, or enter the coordinates 39.7368,-105.2454. From the parking lot ascend the stone steps to the watch site. EVERYONE IS WELCOME TO THE HAWK WATCH TO ENJOY THE SPECTACLE OF RAPTOR MIGRATION, EVEN IF YOU KNOW NOTHING ABOUT IDENTIFYING RAPTORS IN FLIGHT. We will help you to learn Raptor ID if you are interested. See https://groups.google.com/g/cobirds/c/Oznn4uc6MBk

Daily Raptor Counts: Sep 04, 2026
Species Day's Count Month Total Season Total
Black Vulture 0 0 0
Turkey Vulture 9 13 118
Osprey 0 5 7
Bald Eagle 0 0 1
Northern Harrier 0 0 1
Sharp-shinned Hawk 0 0 3
Cooper's Hawk 1 2 16
American Goshawk 0 0 0
Broad-winged Hawk 0 0 0
Red-tailed Hawk 10 33 190
Rough-legged Hawk 0 0 0
Swainson's Hawk 1 4 19
Ferruginous Hawk 0 0 0
Golden Eagle 0 0 1
American Kestrel 0 0 20
Merlin 0 0 0
Peregrine Falcon 0 0 1
Prairie Falcon 0 0 1
Mississippi Kite 0 0 0
Unknown Accipitrine 0 0 0
Unknown Buteo 0 0 1
Unknown Falcon 0 0 0
Unknown Eagle 0 0 0
Unknown Raptor 0 0 1
Total: 21 57 380


Observation start time: 08:45:00
Observation end time: 12:30:00
Total observation time: 3.75 hours
Official Counter Ajit Antony
Observers: Kirstin Chapman, Liza Antony



Visitors:
At the parking lot when we were just getting ready to set out, at car park next to us and it was Kirstin Chapman of her Arvada Kestrel Project who had read our reports and wanted to come and see the migration. We showed her how to ID TV versus RT, using the primary projection to help identify SW, thermal formation and thermal capping clouds developing and coming in from the West, CH versus SS, and she was interested in how we found and decided on this site (see Site Settings in the left sidebar of Hawkcount.org for details). She was a quick learner and good ID RT and TV over Lookout Mountain 0.6 miles away. 2 young couples remarked on how magical this spot was, and seeing us with binoculars, one of the women told the others of how she likes the Merlin app so much she has become a "bird lady." One of the 4 had binoculars and I suggested that if they liked Merlin so much they should think of going on DFO trips. Another hiker who walked up for the second time to the top asked how many hawks we had seen and which species.

Weather:
Light wildfire smoke haze over Denver resulting in limited clear visibility to 19 km which cleared up by 12:00 p.m. to a visibility of 39 km, light winds from the East, no cloud cover increased to 25%. The Soaring Forecast of the NWS predicted lift at 12 feet per second with the height of thermals 11,645 ft AGL which was surprisingly low given the bright sun and cloudless sky. I looked it up and found that that was because of a capping inversion layer at 12,000 ft AGL.

Raptor Observations:
Most of the raptors flew over Lookout Mountain with a few flying through 'the gap' between it and Green Mountain, and a small number flying far to the East and high going straight SSE through the same gap but further east, closer to Green Mountain. The first raptor aloft was a local TV at 9:56 a.m. DST followed by a migrant RT at 9:58 a.m.. An adult GE was repeatedly dived on by 3 local RT until it escaped to the north. The local RTs chased or dove on many of the migrant RT and TV. In the lost 0.5 hours we had only one migrant, though we were scanning high over Lookout Mountain and to the east in case they were flying higher because of the height of the thermals, but we couldn't spot any. Non-migrant raptors: Close-up CH 2, one juvenile to the NW, and another CH to the NE seen while we were looking at a paraglider. RT 4. TV 15.

Non-raptor Observations:
The paragliders started at 11:00 a.m. with no lift, but an hour later they had moderately good lift. SAPH 1, BTHU 1, BASW 1, CORA 2.

Predictions:
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Light and variable wind becoming east northeast 5 to 8 mph in the morning. The winds aloft predicted by earth.nullschool.net is for light North winds becoming Northeast which could help migrants flying south.


Report submitted by Ajit Antony (aiantony@earthlink.net)
More information at hawkcount.org: [Site Profile] [Day Summary] [Month Summary]




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[cobirds] Bird Conservancy of the Rockies - Barr Lake Banding Report, 9/4/26

Another hot morning, and our slowest day of the season for new birds.  We banded 20 birds, but caught another 25 that had been banded previously this season.  20 of those were Wilson's Warblers.....when you've caught 364 in 11 days there are bound to be a bunch still around, trying to put on enough fat to continue their journeys.

Here are the 20 new for the day:

Willow Flycatcher 1
Northern House Wren 3
Gray Catbird 1
Yellow Warbler 1
Common Yellowthroat 2
Wilson's Warbler 12

We are open Tuesday through Saturday, weather permitting, through October 23.  Most weekday mornings there is a visitor session from 7:30 to 8:30, and on the weekends there are sessions at 8, 9 and 10 a.m.  Reservations are needed; here is the link.   Please join us......It is a great year to visit Barr!

Meredith McBurney
Bander, Barr Lake Station
Bird Conservancy of the Rockies

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[cobirds] Labor Day around the lake!

CoBirders, A reminder about next Monday! And, now, it has even more importance! W’ell be sharing our results with the Fall Count (a week early)! ------------------------------------ It’s that time again. The 7th annual Labor Day Cherry Creek SP Circumlakation! (I started this as “Let’s-get-outside-during-COVID” event, and I can’t let it go!) This is NOT an official event by any means. It’s just an invitation to join me on a bird walk around Cherry Creek State Park (about 13 miles total). Over the last six years, we’ve tallied over 100 different species total. This weird year . . . who knows? I'll start at the Tower Loop on September 7 at 630am, and head around the lake clockwise. That means we’re crossing the dam around 1:00pm . . . and we’ve been fortunate to get Rock Wren fairly often! No need to RSVP, just show up! If you have questions, email me back, or give me a text/call at 303-501-6659. Gary Brower Unincorporated Arapahoe County -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobirds@googlegroups.com For more options, visit this group at http://groups.google.com/group/cobirds * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate. * Join Colorado Field Ornithologists https://cobirds.org/membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/cobirds/D642FFC7-5A79-4141-8E1B-74FF7AEB170A%40gmail.com.