Re: [cobirds] Birders Cleanup Malm Trail in Alamosa

[Lauren Hyde]

Thank you for doing that, John. All of us should consider leaving our birding areas and trails cleaner than when we entered them. A good rule of thumb is to carry a trash bag with your birding gear. You can even make a non-disposable trash bag by attaching straps to an empty bag of bird seed!Lauren HydeKeenesburg, Weld CountyOn Apr 22, 2023, at 6:06 PM, mvjo...@gmail.com  wrote:Well with today being Earthday, I gathered up some our local birders and 15 of us collected trash and litter over the many segments of trail. It was cloudy and ominously threatening rain, but we got it done and still had a bit of time for birding. There is a pickup truck full of trash that will no longer tarnish this great birding trail! I am proud of our group for their hard work and commitment to small piece of the planet!John RawinskiMonte Vista, CO



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[cobirds] Birders Cleanup Malm Trail in Alamosa

[mvjo...@gmail.com]

Well with today being Earthday, I gathered up some our local birders and 15 
of us collected trash and litter over the many segments of trail. It was 
cloudy and ominously threatening rain, but we got it done and still had a 
bit of time for birding. 
There is a pickup truck full of trash that will no longer tarnish this 
great birding trail! I am proud of our group for their hard work and 
commitment to small piece of the planet!

John Rawinski
Monte Vista, CO

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[cobirds] COMMON BLACK HAWK - FREMONT CO.

[s...@juno.com]

Today 4/22 one COMMON BLACK HAWK was found on M-50 just west of a small town 
called Swissvale, look for mile marker 229 and drive .4 mile west should put 
you in the area, where the Common Black Hawk was found it was down next to the 
river feeding on a fish. Thank to George Rementer the original finder on 4/16, 
and follow up on 4/17 Steve Mlodinow and Mark Peterson with directions to the 
bird. Tim SmartBroomfield Co

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[cobirds] New year birds - Douglas

['Hugh Kingery' via Colorado Birds]

 This morning we added two new year birds for our patch.Two Vesper Sparrows 
perched on a fence along our road, looking quite crisp. 
Then we saw a Loggerhead Shrike, perched on a phone wire near the Vespers. We 
flushed it and itflew across the road and perched on a fence line where we 
could see all the details.
We have had a Broad-tailed Humm. at our feeder for about a week (after Karen 
Metzhad one on the other side of Franktown). It stays only briefly. Also our 
first 
White-crowned Sparrow of the spring, a Gambel's version. 

Only a couple of juncos remain and we haven't recorded a Solitaire in a week or 
so.
 
Hugh 

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Re: Fw: [cobirds] Rare warbler diets

[Brendan Beers]

To add to this discussion, a Yellow-throated and Cassin's Vireo were
amongst a mixed flock of YRWA gleaning in low trees and shrubs along the
Poudre River at Watson Fish Hatchery in Larimer County this morning.   It
does seem like whatever is on the menu, nearby water sources are a common
thread the past few days.

https://ebird.org/checklist/S134626358

Brendan Beers
Fort Collins


On Sat, Apr 22, 2023 at 11:47 AM Peter Burke  wrote:

> COBirders,
> Just to add to this wonderful discussion, I ventured down to the creek on
> Thursday late morning and found the Northern Parula feeding with a pair of
> Audubon's Yellow-rumpeds high in a leafless tree. I stuck around hoping to
> see the Yellow-throated and was fortunate to see it briefly feeding among
> the rocks right along the stream. It was then I noticed what a hot spot
> this section was, per Nathan's description.
>
> I was hoping to photograph the Yellow-throated Warbler, so I took a seat
> and waited. Over the next hour or so I watched the Parula, two Audubon's
> and one Myrtle Yellow-rump, American Goldfinch, Pink-sided and Oregon
> Dark-eyed Juncos, House Finch, White-crowned Sparrow, American Crow,
> Chipping Sparrow, American Robin, White-breasted Nuthatch and European
> Starling all scouring this one area. As Nathan noted, the Parula and
> Yellow-rumped Warblers were doing some flycatching, but for the most part
> all the birds were gleaning from the rocks and branches quite close to the
> water. This would support Dave's hypothesis for a localized insect hatch as
> aquatic insects tend to pause after emerging from their pupal(?) skins to
> allow their wings to unfold and dry.
>
> Of course the Yellow-throated Warbler never returned while I was there,
> but that's how it often goes...
>
> Best,
>
> Peter Burke
> Boulder
>
>
>
> On Sat, Apr 22, 2023 at 10:29 AM DAVID A LEATHERMAN 
> wrote:
>
>> I intended this to go to everyone, not just Nathan.  Sorry.
>> Dave
>> --
>> *From:* DAVID A LEATHERMAN 
>> *Sent:* Saturday, April 22, 2023 10:23 AM
>> *To:* Nathan Pieplow 
>> *Subject:* Re: [cobirds] Rare warbler diets
>>
>> Nathan et al,
>> Short answer is "I don't know".
>>
>> Long guess is as follows.
>>
>> When multiple species of birds are foraging on multiple types of plants
>> in multiple styles, and the situation is near water, my default guess is
>> always an aquatic insect hatch.  And the most likely aquatic insect group
>> is chironomid midges.  We have several species, some of which are quite
>> small.  The nymphs feed on organic plant and animal matter in the water and
>> emerge from the surface as flying, mosquito-like adults.  As adults they
>> often form swarms, especially in the evening.  Adults also sit around on
>> all manner of vegetation and are not particular about which kind.  We have
>> had real pulses of midge emergence over the last few weeks.   Flying midges
>> and sitting midges could account for the two types of foraging (flycatching
>> and standard twig gleaning).
>>
>> Why just one stretch of the creek?  Perhaps it has just the right organic
>> matter, or the flow rate is just right.  Or the lighting in general along
>> this stretch is such that birds can more easily spot flying/perched prey
>> than stretches on either side of it.  Hard to say.  The same way one 9
>> cubic foot section of air has a swarm of midges, it's easy to imagine a
>> clumped distribution of ideal larval development conditions in the creek
>> bed.  It's a clumpy world out there.
>>
>> Staying with the guess of aquatic insects, I suppose the next most likely
>> prey suspect is one of the caddisflies, but they would be darker/bigger and
>> more conspicuous than some of the smallest midges.  If it was caddisflies,
>> Nathan's sharp eye would have seen them.
>>
>> About the only way to confirm any of this is to be present with a net and
>> sweep it thru the air in the area with birds and the nearby inactive areas,
>> and see if there's a difference in the catch.  I did some of that in
>> November 2021 when "the pond" on the north side of the CU campus had the
>> magnolia warbler.  Lots of aphids of many types in the air and on foliage,
>> but the pond and creek had plenty of midges, too.  Late fall is more likely
>> to be when flying adult aphids compete with midges for the crown of best
>> staple for migrating passerines.  In early spring, 1) midges; 2) small
>> flies, bees and weevil larvae attracted to, or in, willow/cottonwood
>> flowers; 3) overwintering scale insect nymphs (especially elm); 4)
>> gall-making adult psyllids emerging from hackberry trunk bark or other
>> types of tree bark near hackberries - these are consistent common
>> denominators in many spring rare bird events.  Aphids not so much.
>>
>> The only thing more fun than observing the mysteries is solving the
>> mysteries.  I must say it's a great comfort to know this task will never
>> end.
>>
>> Thanks, Nathan, for your efforts and questions.
>>
>> Dave 

[cobirds] European Starlings VS Red Headed Woopeckers

[Duck Cop]

Has anyone noticed any conflicts with Red Headed Woodpeckers
nesting failures due to European Starlings.
For the record I feel it is Incumbent on me to set it straight.
I predict we will lose the Red Headed Woodpecker due to this
Non Native, highly invasive bird speciesthe European Starling. 
Why? Because the Red Headed Woodpecker did not evolve 
with the European Starling. 
Fossils of the Red Headed Woodpecker have been found in 
Virginia, Florida and Illinois which date back more than 2.5 million
years ago to the Neocene Age. 
Approximately 75 European Starlings were improperly brought into the United
States in 1890 by a German immigrant lunatic obsessed with
writings of William Shakespeare. He released the Starlings in Central Park
in New York City. The Starlings flourished across the U.S. to over 200 
million birds. They have caused over 400 million dollars damage to 
farmer's crop losses and disease spread to livestock annually. 
Also, on, or about 1960 I remember as a young teenager just entering
high school.I was watching the national news on TV with my Dad.
It showed an Eastern Airlines passenger plane taking off from the
airport in Boston. A flock of Starlings flew into the plane's flight path
Jamming both engines. The plane promptly went down and crashed.
62 people died. True story.  Daniel

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Re: [cobirds] Red Headed Woodpecker

[Duck Cop]

Bill,  Ok then Fountain Creek Nature Center and possibly Chico Ranch area. 
2010? 
The fact that  you saw 'Juveniles" is most encouraging. I will check these 
areas
out this summer. Red Headed Woodpeckers live about 10 years at the most. 

Daniel Hurt
Larrimer County, Colorado

On Friday, April 21, 2023 at 1:09:36 PM UTC-6 Bill Kosar wrote:

> Daniel,
>
> I have a picture of a juvenile red-headed woodpecker that I saw at 
> Fountain Creek Nature Center in about 2010. I have also seen them in the 
> banding area at Chico ranch where many other folks have seen them.
>
> Bill
>
> On Friday, April 21, 2023 at 1:02:16 PM UTC-6 ynoz4...@gmail.com wrote:
>
>> Daniel,
>>
>> We had a Red-headed Woodpecker at our cabin in Allenspark last year on 
>> September 24, 2022.
>>
>> Robin Jasper
>>
>> Loveland and Allenspark
>>
>>  
>>
>>  
>>
>> *From:* cob...@googlegroups.com  *On Behalf Of 
>> *Duck 
>> Cop
>> *Sent:* Friday, April 21, 2023 9:35 AM
>> *To:* Colorado Birds 
>> *Subject:* [cobirds] Red Headed Woodpecker
>>
>>  
>>
>> Has anyone in group seen a Red Headed Woodpecker here in Colorado.  I am 
>> doing some research regarding the RHW steep population declines.  Thank 
>> You,  Daniel
>>
>> -- 
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>> Include bird species and location in the subject line when appropriate
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>>  
>> 
>> .
>>
>

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Re: [cobirds] Red Headed Woodpecker

[Duck Cop]

Diana,  Thank You so much for that information regarding Red Headed 
Woodpecker sightings
here in Colorado. Chico Basin I have heard of. Tamarack SWA I am not 
familiar with. I will find 
them though as soon as Winter leaves. Hopefully this summer I can see/hear 
a RHW. 
Thanks again,  I moved to Colorado (Larimer County) near Ft Collins in 2016 
from the East
Tennessee, where I had a pair attempted several times to nest, but always 
failed due to
European Starlings.  Daniel

On Friday, April 21, 2023 at 1:24:38 PM UTC-6 Diana Beatty wrote:

> I have also seen them at Chico Basin like Bill, and Tamarack SWA..  Two or 
> three years ago, one over-wintered on Fort Carson and was counted in the 
> Fountain Creek CBC that year.
>
> Diana Beatty
> El Paso County
>
> On Fri, Apr 21, 2023 at 1:09 PM Bill Kosar  wrote:
>
>> Daniel,
>>
>> I have a picture of a juvenile red-headed woodpecker that I saw at 
>> Fountain Creek Nature Center in about 2010. I have also seen them in the 
>> banding area at Chico ranch where many other folks have seen them.
>>
>> Bill
>>
>> On Friday, April 21, 2023 at 1:02:16 PM UTC-6 ynoz4...@gmail.com wrote:
>>
>>> Daniel,
>>>
>>> We had a Red-headed Woodpecker at our cabin in Allenspark last year on 
>>> September 24, 2022.
>>>
>>> Robin Jasper
>>>
>>> Loveland and Allenspark
>>>
>>>  
>>>
>>>  
>>>
>>> *From:* cob...@googlegroups.com  *On Behalf Of 
>>> *Duck Cop
>>> *Sent:* Friday, April 21, 2023 9:35 AM
>>> *To:* Colorado Birds 
>>> *Subject:* [cobirds] Red Headed Woodpecker
>>>
>>>  
>>>
>>> Has anyone in group seen a Red Headed Woodpecker here in Colorado.  I am 
>>> doing some research regarding the RHW steep population declines.  Thank 
>>> You,  Daniel
>>>
>>> -- 
>>> -- 
>>> You received this message because you are subscribed to the Google
>>> Groups "Colorado Birds" group.
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>>> * 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/CFO/Membership/
>>> --- 
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>>>  
>>> 
>>> .
>>>
>> -- 
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>>  
>> 
>> .
>>
>
>
> -- 
>
> **
>
> “I wish it need not have happened in my time,” said Frodo. “So do I,” said 
> *Gandalf*, “and so do all who live to see such times. But that is not for 
> them to decide. All we have to decide is what to do with the time that is 
> given us.”
>
>
>
>

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Re: [cobirds] Red Headed Woodpecker

[Duck Cop]

David,
  Ok, thanks. I have been on Ebird numerous times. However, I am fairly new 
to Colorado
moving here in 2016. I had to go to Books a Million and purchase 4 new bird 
books. Still 
trying to find my way around these parts, but am  improving. Exploring is 
such fun. 

Daniel Hurt
Larimer County, Co.

On Friday, April 21, 2023 at 1:41:29 PM UTC-6 David Suddjian wrote:

> Hi Daniel,
>
> Why not look at and download the 1000s of sightings of RHWO from Colorado 
> on eBird?
>
> [image: RHWO map (2).png]
>
> [image: RHWO abundance 2018- 2022 (2).png]
> David Suddjian
> Littleton, CO
>
>
> On Fri, Apr 21, 2023 at 9:55 AM Duck Cop  wrote:
>
>> Has anyone in group seen a Red Headed Woodpecker here in Colorado.  I am 
>> doing some research regarding the RHW steep population declines.  Thank 
>> You,  Daniel
>>
>> -- 
>>
> -- 
>> You received this message because you are subscribed to the Google
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>> Include bird species and location in the subject line when appropriate
>> * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/
>> --- 
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>>  
>> 
>> .
>>
>

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Re: [cobirds] Red Headed Woodpecker

[Duck Cop]

Robin,  Ok, that sounds good to me. AS it warms up, hopefully in May thru 
Sept. I plan to visit
all the places that this group's members have been so kind to advise me 
where I can see our
most beautiful Woodpecker.  Thank you so much,  Daniel
"You'll never defeat, or cheat Mother Nature without some adverse 
repercussions".  

On Friday, April 21, 2023 at 1:02:16 PM UTC-6 ynoz4...@gmail.com wrote:

> Daniel,
>
> We had a Red-headed Woodpecker at our cabin in Allenspark last year on 
> September 24, 2022.
>
> Robin Jasper
>
> Loveland and Allenspark
>
>  
>
>  
>
> *From:* cob...@googlegroups.com  *On Behalf Of *Duck 
> Cop
> *Sent:* Friday, April 21, 2023 9:35 AM
> *To:* Colorado Birds 
> *Subject:* [cobirds] Red Headed Woodpecker
>
>  
>
> Has anyone in group seen a Red Headed Woodpecker here in Colorado.  I am 
> doing some research regarding the RHW steep population declines.  Thank 
> You,  Daniel
>
> -- 
> -- 
> You received this message because you are subscribed to the Google
> Groups "Colorado Birds" group.
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> bird species and location in the subject line when appropriate
> * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/
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>  
> 
> .
>

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Re: Fw: [cobirds] Rare warbler diets

[Peter Burke]

COBirders,
Just to add to this wonderful discussion, I ventured down to the creek on
Thursday late morning and found the Northern Parula feeding with a pair of
Audubon's Yellow-rumpeds high in a leafless tree. I stuck around hoping to
see the Yellow-throated and was fortunate to see it briefly feeding among
the rocks right along the stream. It was then I noticed what a hot spot
this section was, per Nathan's description.

I was hoping to photograph the Yellow-throated Warbler, so I took a seat
and waited. Over the next hour or so I watched the Parula, two Audubon's
and one Myrtle Yellow-rump, American Goldfinch, Pink-sided and Oregon
Dark-eyed Juncos, House Finch, White-crowned Sparrow, American Crow,
Chipping Sparrow, American Robin, White-breasted Nuthatch and European
Starling all scouring this one area. As Nathan noted, the Parula and
Yellow-rumped Warblers were doing some flycatching, but for the most part
all the birds were gleaning from the rocks and branches quite close to the
water. This would support Dave's hypothesis for a localized insect hatch as
aquatic insects tend to pause after emerging from their pupal(?) skins to
allow their wings to unfold and dry.

Of course the Yellow-throated Warbler never returned while I was there, but
that's how it often goes...

Best,

Peter Burke
Boulder



On Sat, Apr 22, 2023 at 10:29 AM DAVID A LEATHERMAN 
wrote:

> I intended this to go to everyone, not just Nathan.  Sorry.
> Dave
> --
> *From:* DAVID A LEATHERMAN 
> *Sent:* Saturday, April 22, 2023 10:23 AM
> *To:* Nathan Pieplow 
> *Subject:* Re: [cobirds] Rare warbler diets
>
> Nathan et al,
> Short answer is "I don't know".
>
> Long guess is as follows.
>
> When multiple species of birds are foraging on multiple types of plants in
> multiple styles, and the situation is near water, my default guess is
> always an aquatic insect hatch.  And the most likely aquatic insect group
> is chironomid midges.  We have several species, some of which are quite
> small.  The nymphs feed on organic plant and animal matter in the water and
> emerge from the surface as flying, mosquito-like adults.  As adults they
> often form swarms, especially in the evening.  Adults also sit around on
> all manner of vegetation and are not particular about which kind.  We have
> had real pulses of midge emergence over the last few weeks.   Flying midges
> and sitting midges could account for the two types of foraging (flycatching
> and standard twig gleaning).
>
> Why just one stretch of the creek?  Perhaps it has just the right organic
> matter, or the flow rate is just right.  Or the lighting in general along
> this stretch is such that birds can more easily spot flying/perched prey
> than stretches on either side of it.  Hard to say.  The same way one 9
> cubic foot section of air has a swarm of midges, it's easy to imagine a
> clumped distribution of ideal larval development conditions in the creek
> bed.  It's a clumpy world out there.
>
> Staying with the guess of aquatic insects, I suppose the next most likely
> prey suspect is one of the caddisflies, but they would be darker/bigger and
> more conspicuous than some of the smallest midges.  If it was caddisflies,
> Nathan's sharp eye would have seen them.
>
> About the only way to confirm any of this is to be present with a net and
> sweep it thru the air in the area with birds and the nearby inactive areas,
> and see if there's a difference in the catch.  I did some of that in
> November 2021 when "the pond" on the north side of the CU campus had the
> magnolia warbler.  Lots of aphids of many types in the air and on foliage,
> but the pond and creek had plenty of midges, too.  Late fall is more likely
> to be when flying adult aphids compete with midges for the crown of best
> staple for migrating passerines.  In early spring, 1) midges; 2) small
> flies, bees and weevil larvae attracted to, or in, willow/cottonwood
> flowers; 3) overwintering scale insect nymphs (especially elm); 4)
> gall-making adult psyllids emerging from hackberry trunk bark or other
> types of tree bark near hackberries - these are consistent common
> denominators in many spring rare bird events.  Aphids not so much.
>
> The only thing more fun than observing the mysteries is solving the
> mysteries.  I must say it's a great comfort to know this task will never
> end.
>
> Thanks, Nathan, for your efforts and questions.
>
> Dave Leatherman
> Fort Collins
> --
> *From:* cobirds@googlegroups.com  on behalf of
> Nathan Pieplow 
> *Sent:* Friday, April 21, 2023 10:29 PM
> *To:* cobirds 
> *Subject:* [cobirds] Rare warbler diets
>
> On Wednesday afternoon, Curtis Beimborn discovered a Yellow-throated
> Warbler and a Northern Parula along a section of Boulder Creek just below
> the university, about 100 yards east of 17th Street in Boulder. Both birds
> were still present this evening at about 6:00 PM. With the exception of a
> 24-hour disappearance by 

Re: [cobirds] Red-headed Woodpeckers

[Pam Piombino]

Here is a list of sighting reported in CO to iNaturalist:

https://www.inaturalist.org/observations?place_id=34_id=18204

Pam Piombino

On Sat, Apr 22, 2023 at 10:52 AM 'Carol Blackard' via Colorado Birds <
cobirds@googlegroups.com> wrote:

> My husband and I always enjoyed a few days at Bonnie Lake State Park
> before it was drained. We went every year in August mainly to see the
> Red-headed Woodpeckers, both mature and immature, that had used the old
> dying cottonwoods in the north side of the lake.
> Juvenile Swainson Hawks were usually practicing their thermal flying over
> the dam at the same time.
> Beautiful memories.
>
> Carol Blackard
> carolblackard.com
> Sent from my iPhone
>
> --
> --
> 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
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> * 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/CFO/Membership/
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> .
>


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[cobirds] Red-headed Woodpeckers

['Carol Blackard' via Colorado Birds]

My husband and I always enjoyed a few days at Bonnie Lake State Park before it 
was drained. We went every year in August mainly to see the Red-headed 
Woodpeckers, both mature and immature, that had used the old dying cottonwoods 
in the north side of the lake.
Juvenile Swainson Hawks were usually practicing their thermal flying over the 
dam at the same time.
Beautiful memories.
 
Carol Blackard
carolblackard.com
Sent from my iPhone

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Fw: [cobirds] Rare warbler diets

[DAVID A LEATHERMAN]

I intended this to go to everyone, not just Nathan.  Sorry.
Dave

From: DAVID A LEATHERMAN 
Sent: Saturday, April 22, 2023 10:23 AM
To: Nathan Pieplow 
Subject: Re: [cobirds] Rare warbler diets

Nathan et al,
Short answer is "I don't know".

Long guess is as follows.

When multiple species of birds are foraging on multiple types of plants in 
multiple styles, and the situation is near water, my default guess is always an 
aquatic insect hatch.  And the most likely aquatic insect group is chironomid 
midges.  We have several species, some of which are quite small.  The nymphs 
feed on organic plant and animal matter in the water and emerge from the 
surface as flying, mosquito-like adults.  As adults they often form swarms, 
especially in the evening.  Adults also sit around on all manner of vegetation 
and are not particular about which kind.  We have had real pulses of midge 
emergence over the last few weeks.   Flying midges and sitting midges could 
account for the two types of foraging (flycatching and standard twig gleaning).

Why just one stretch of the creek?  Perhaps it has just the right organic 
matter, or the flow rate is just right.  Or the lighting in general along this 
stretch is such that birds can more easily spot flying/perched prey than 
stretches on either side of it.  Hard to say.  The same way one 9 cubic foot 
section of air has a swarm of midges, it's easy to imagine a clumped 
distribution of ideal larval development conditions in the creek bed.  It's a 
clumpy world out there.

Staying with the guess of aquatic insects, I suppose the next most likely prey 
suspect is one of the caddisflies, but they would be darker/bigger and more 
conspicuous than some of the smallest midges.  If it was caddisflies, Nathan's 
sharp eye would have seen them.

About the only way to confirm any of this is to be present with a net and sweep 
it thru the air in the area with birds and the nearby inactive areas, and see 
if there's a difference in the catch.  I did some of that in November 2021 when 
"the pond" on the north side of the CU campus had the magnolia warbler.  Lots 
of aphids of many types in the air and on foliage, but the pond and creek had 
plenty of midges, too.  Late fall is more likely to be when flying adult aphids 
compete with midges for the crown of best staple for migrating passerines.  In 
early spring, 1) midges; 2) small flies, bees and weevil larvae attracted to, 
or in, willow/cottonwood flowers; 3) overwintering scale insect nymphs 
(especially elm); 4) gall-making adult psyllids emerging from hackberry trunk 
bark or other types of tree bark near hackberries - these are consistent common 
denominators in many spring rare bird events.  Aphids not so much.

The only thing more fun than observing the mysteries is solving the mysteries.  
I must say it's a great comfort to know this task will never end.

Thanks, Nathan, for your efforts and questions.

Dave Leatherman
Fort Collins

From: cobirds@googlegroups.com  on behalf of Nathan 
Pieplow 
Sent: Friday, April 21, 2023 10:29 PM
To: cobirds 
Subject: [cobirds] Rare warbler diets

On Wednesday afternoon, Curtis Beimborn discovered a Yellow-throated Warbler 
and a Northern Parula along a section of Boulder Creek just below the 
university, about 100 yards east of 17th Street in Boulder. Both birds were 
still present this evening at about 6:00 PM. With the exception of a 24-hour 
disappearance by the Yellow-throated, both birds have been consistently 
sticking to the same 50-yard stretch of creek.

This same stretch of creek has also been the center of activity for juncos, 
goldfinches, nuthatches, Ruby-crowned Kinglets, and Yellow-rumped Warblers. But 
if you walk more than a few dozen yards away from this spot in either 
direction, bird numbers drop precipitously. This situation has remained stable 
for the past three days, and so, Dave Leatherman-style, I decided that the 
birdy spot must have some kind of food that is keeping all these birds around.

I tried this evening to observe food habits. Interestingly, the two rare 
warblers are engaging almost exclusively in flycatching -- especially the 
parula, which sallies constantly. The Yellow-throated's sallies are less 
frequent and possibly less successful, and it also gleaned some branches while 
I was there. Whatever they are catching is too small for me to see in the air. 
And most of the other birds present seem to be following more typical foraging 
strategies for their species -- i.e. few of them are flycatching.

The rare warblers are frequenting some dead branches over the creek as well as 
some barely leafed-out elms, cottonwoods, and buckthorns. Dave, what do you 
think they are going for? Flying adult aphids?

Why would the flying insects be so faithful to this one short stretch of creek? 
And how long might this situation last? Can we expect other migrants to join 
the fun in the coming days?

Re: [cobirds] Abridged summary of cobirds@googlegroups.com - 18 updates in 10 topics

[Daniel H. Hurt]

Cobirds, I love this group. Joined 3 days ago and wish it had been sooner.
in 1977 as soon as I graduated college I was
hired by the U.S. Fish and Wildlife Service on one of their major Migratory
Bird National Wildlife Refuges. I was hired as
the first Public Use Specialist and over saw Audubon's Christmas Bird
Count. It was then that I discovered that Birders
are special people. They are kind, intelligent, and caring. I am new to
Colorado. Moved here from Tenn. in 2016.
In Tennessee I had a Small 30 acre farm in NW Tenn. near Reelfoot Lake.
This is in the heart of Red- Headed Woodpecker
Year around habitat. Numerous people in this group have advised me where I
can possibly observe a RHW in the wild here
in Colorado and that is greatly appreciated. Thank You again so much,
Daniel
"You'll never defeat, or cheat Mother Nature without some adverse
repercussions".
Daniel Hurt
Larimer County, Co.
And I feel

On Sat, Apr 22, 2023 at 2:20 AM  wrote:

> cobirds@googlegroups.com
> 
>  Google
> Groups
> 
> 
> Today's topic summary
> View all topics
> 
>
>- Rare warbler diets <#m_4338956989347543326_group_thread_0> - 1 Update
>- Dinosaur Ridge - Denver Field Ornithologists (21 Apr 2023) 76 Raptors
><#m_4338956989347543326_group_thread_1> - 1 Update
>- Scissor tail - YES <#m_4338956989347543326_group_thread_2> - 2
>Updates
>- Spring Bird Counts - May 12-15
><#m_4338956989347543326_group_thread_3> - 1 Update
>- Lucy’s Warbler Arapahoe County
><#m_4338956989347543326_group_thread_4> - 1 Update
>- Red Headed Woodpecker <#m_4338956989347543326_group_thread_5> - 8
>Updates
>- BIRD BOMBS It's a Flycatcher May 4 at 7 pm
><#m_4338956989347543326_group_thread_6> - 1 Update
>- Hungry birds like seedlings! <#m_4338956989347543326_group_thread_7>
>- 1 Update
>- Scissor-tailed Flycatcher Douglas County
><#m_4338956989347543326_group_thread_8> - 1 Update
>- Migration Forecast: Opening the gates (4/23 and beyond)
><#m_4338956989347543326_group_thread_9> - 1 Update
>
> Rare warbler diets
> 
> Nathan Pieplow : Apr 21 10:29PM -0600
>
> On Wednesday afternoon, Curtis Beimborn discovered a Yellow-throated
> Warbler and a Northern Parula along a section of Boulder Creek just below
> the university, about 100 yards east of 17th Street in ...more
> 
> Back to top <#m_4338956989347543326_digest_top>
> Dinosaur Ridge - Denver Field Ornithologists (21 Apr 2023) 76 Raptors
> 
> repo...@hawkcount.org: Apr 22 02:46AM
>
> Dinosaur Ridge - Denver Field Ornithologists
> Colorado, USA
> Daily Raptor Counts: Apr 21, 2023
> ---
>
> Species Day's Count ...more
> 
> Back to top <#m_4338956989347543326_digest_top>
> Scissor tail - YES
> 
> Eric Storms : Apr 21 01:39PM -0600
>
> Scissor tail continues at Roxburough park. On entrance road, at about the
> third bump sign. It was perched of thistle (?) then flew towards reservoir.
>
> -Eric Storms
> Douglas county
> ...more
> 
> Dan Stringer : Apr 21 04:48PM -0700
>
> After seeing the bird, I saw a ranger with flashing lights behind a car
> that had pulled off to the side, window down and binoculars in hand. He
> took her license and registration back to his truck, ...more
> 
> Back to top <#m_4338956989347543326_digest_top>
> Spring Bird Counts - May 12-15
> 
> Hugh Kingery : Apr 21 10:56PM
>
> | We plan to conduct our annual Spring Bird Count, as usual on the second
> weekend in May.
> See the list of counts & leaders below. If you'd like to go on one or
> more, contact the Leader to confirm.  ...more
> 
> Back to top <#m_4338956989347543326_digest_top>
> Lucy’s Warbler Arapahoe County
> 
> Jared Del Rosso : Apr 21 02:41PM -0700
>
> A maybe, maybe not sighting today. At the 

Re: [cobirds] Re: Scissor tail - YES

[LeAnn Joswick]

The ranger's are very grumpy at Roxborough. I got a serious talking to
while looking at the Tundra Swan last December. I did see the Scissor tail
yesterday but was very careful not to sit too long on the road and was
constantly looking over my shoulder. I'm sure they will be out in full
force tomorrow if the bird continues.

LeAnn Joswick
Douglas County

On Fri, Apr 21, 2023 at 5:48 PM 'Dan Stringer' via Colorado Birds <
cobirds@googlegroups.com> wrote:

> After seeing the bird, I saw a ranger with flashing lights behind a car
> that had pulled off to the side, window down and binoculars in hand. He
> took her license and registration back to his truck, I hope he didn't
> actually issue a ticket...the road has plenty of No Parking signage, just
> an FYI that the ranger is on point to show that they mean it.
>
> Dan Stringer
> Larkspur, CO
>
> On Friday, April 21, 2023 at 1:40:13 PM UTC-6 Eric Storms wrote:
>
>> Scissor tail continues at Roxburough park. On entrance road, at about the
>> third bump sign. It was perched of thistle (?) then flew towards reservoir.
>>
>> -Eric Storms
>> Douglas county
>>
> --
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> .
>

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