[cobirds] Prewitt Reservoir Shorebird Bonanza (Washington County)

[Eric Hynes]

Hello CO Birders:

I had the distinct pleasure of leading a CFO Shorebird ID workshop to
Prewitt Reservoir in Washington County this morning and we enjoyed a
shorebird spectacle. We tallied 20 species, some in remarkable numbers.

*Baird's Sandpipers* and *Stilt Sandpipers* were there by the hundreds.

Noteworthy species were *Black-bellied Plover* (1), *Semipalmated Plover*
(4), *Red-necked Phalarope* (2), *Sanderling* (1), and *Short-billed
Dowitcher* (1)

The complete list can be viewed here:
https://ebird.org/checklist/S93849364

The second image of Semipalmated Plover in the eBird checklist has a few
other species in it. See how many species you can discover.

Good birding,
Eric
.
Eric Hynes
Telluride, CO
-
Box Canyon Birding
boxcanyonbirding.com
-
Field Guides Birding Tours
www.fieldguides.com

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[cobirds] Re: Shorebird Workshop field trip report

[Dave Cameron]

Any White-rumped at Prewitt?

Dave Cameron
Denver

On Saturday, August 28, 2021 at 9:38:33 PM UTC-6 Nick Komar wrote:

> I led the shorebird workshop field trip to Jumbo Reservoir today, for a 
> great group of 9 registrants (you know who you are). Shorebirding was slow 
> (just 12 species between Jumbo and Red Lion SWA). So we ended the day at 
> Prewitt Reservoir south mudflats which hosted 19 species of shorebirds 
> including two rarities: Short-billed Dowitcher and Buff-breasted Sandpiper 
> (photo below). We had twenty species of shorebirds on the day, as well as 
> some nice land birds at Tamarack Ranch SWA including Bell’s Vireo and two 
> Ovenbirds, and several Mississippi Kites in Sterling. 
>
> Nick Komar
> Fort Collins CO 
>

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[cobirds] Bird Conservancy of the Rockies - Barr Banding Report, 8/28/21

[Meredith McBurney]

I mentioned the influx of Chipping Sparrows yesterday when we caught 11, 
which is a lot for this early in the season.  Today, we banded 30.  All but 
three were hatch year birds, still in juvenile plumage.  The other three 
were females, still showing brood patches.  Most were caught together in a 
couple of nets out by the lake on our 8:40 run.  A big breeding season for 
Chippers?

We also caught 35 other birds, pretty typical for the season, for a total 
of 65:

Western Wood-Pewee 8
Willow Flycatcher 1
Dusky Flycatcher 1
Black-capped Chickadee 1
House Wren 8
Yellow Warbler 6
MacGillivray's Warbler 1
Common Yellowthroat 1
Wilson's Warbler 8
Chipping Sparrow 30

We will be open 6 days a week, weather permitting through October 23.  
Closed Mondays.  Click here 
 to register to 
visit - we are offering one-hour slots (up to 12 visitors at a time); 
7:30-8:30 most weekdays, and 8-9, 9-10, and 10-11 on weekends.  We look 
forward to seeing many of you during the season!

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

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[cobirds] Migration Weather: Cold Frontal Passage (8/28)

[Bryan Guarente]

CObirders,
Tonight, on the Front Range of CO, expect a cold frontal passage around
sun-down (depending on your location). Here is what that looks like in
850mb winds at 6pm this evening (green circle is Longmont, CO)

https://earth.nullschool.net/#2021/08/29/Z/wind/isobaric/850hPa/orthographic=-98.48,41.12,712/loc=-105.120,40.191

With that passage, I expect to see turnover of the birds already being seen
today. I don’t expect many of the goodies to stick around with the passage
of this front, but if the food source is good, birds can stick around
longer to fuel up.

It isn’t just about birds leaving the area though, I expect to see a nice
for this time of year push of migrants. Birds won’t be coming from very far
away with this specific push (Montana seems to be the origin or our winds),
but we’ll see what comes with it. Here is a good representation of the
origin of the winds for this coming push (map is for midnight; green circle
is Longmont, CO):

https://earth.nullschool.net/#2021/08/29/0600Z/wind/isobaric/850hPa/orthographic=-99.91,47.44,712/loc=-105.120,40.191

The front is going to stall out overnight, which is great for birders near
the location of the frontal stall. Here is a good representation of where
the front is going to stall (4am map; green circle is between Walsenburg
and La Junta)

https://earth.nullschool.net/#2021/08/29/0900Z/wind/isobaric/850hPa/orthographic=-102.86,38.28,1207/loc=-103.904,37.565

Those of you birding in that area on Sunday have a nice chance for a build
up/convergence of migrants. There is a good chance this includes Pueblo,
any playas between Pueblo and Kit Carson, and possibly out toward John
Martin and NeeNoshe reservoirs too depending on where the front really ends
up stalling. David Tønnessen is leading a shorebird field trip out there
tomorrow for CFO Shorebirds Workshop, so best of luck to them and anyone
else going that direction.

If anyone heads that direction tomorrow, try to find places where the winds
are generally from the north rather than the south and you will be on the
correct side of the front for migrants. Local effects from lakes can alter
the wind field, so try to pay attention to the winds away from the lakes,
not right next to them.

Get out tomorrow to enjoy the birds and slightly cooler weather. We won’t
be free from the smoke, but the cooler temperatures should make for happier
birding conditions (cooler birders, *less* water shimmer, but still
present). If you are right near the front tomorrow, you might expect some
showers later in the day.

Enjoy the cooler temperatures and lovely migrants.
Bryan


-- 
Bryan Guarente
Meteorologist/Instructional Designer
UCAR/The COMET Program
Boulder, CO

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[cobirds] CFO Shorebird Workshop Longmont (Boulder/Weld) 8/28

[snowy.owlets]

Hi Everyone,

 

Today 8/28 I led a CFO shorebird workshop to sites around Longmont,
including Lagerman Reservoir, Little Gaynor Lake, Ish Reservoir, and Union
Reservoir. We found a Pectoral Sandpiper at Little Gaynor, a Forster's Tern
at Union, continuing Redhead and Ring-necked Duck at Lagerman, migrating
Chipping Sparrows at Ish. Water levels at Ish and Union are still very high.
Union Reservoir has no shoreline, Ish a lot less than usual. Little Gaynor
Lake is aromatic with anerobic bacteria, but the shorebirds didn't seem to
mind. There were Am Avocet, Least, and Baird's along with the Pectoral. We
enjoyed great views of Western Grebes transporting chicks on their backs at
Union. Rough count came to 200. There were at least two Clark's Grebes with
them.

 

Mark Miller

Longmont, CO

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[cobirds] Red Knot at John Martin Reservoir

[Edward Landi]

Currently looking at a Red Knot with David T and CFO field trip
participants at the NW corner of John Martin. Standing here: (38.0746409,
-103.0133372) looking SW. Hanging out in front of a small grassy island
that is in  front  of a larger island of snags.--
Edward Landi
North Carolina State University, Class of 2019
Fisheries, Wildlife, and Conservation Biology
My Student Profile and Research Interests


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[cobirds] White-faced Ibis, jeffco

[rosanne juergens]

I'm looking at one, hanging out in flooded area to the right of Fox Run
pkg, Chatfield
Rosanne Juergens
Centennial

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