[cobirds] Re: No eiders in Grand County, 11/20

[Adam Vesely]

Hi Nathan! I spent most of the day yesterday scoping various reservoirs in 
Adams County hoping these incredible birds would settle in my home county. 
I scoped reservoirs that have historically been fruitful for Scoters, 
Loons, and Grebes along the I-76/Highway 85 corridor, but unfortunately, no 
Eiders. Oh well, it's always worth the effort!

Adam Vesely
Thornton, CO

On Sunday, November 20, 2022 at 6:58:02 PM UTC-7 Nathan Pieplow wrote:

> Hi all,
>
> I spent the day checking all the open water in and around Grand County 
> that I could find, in case the King Eiders went that way. I didn't see 
> them. 
>
> Shadow Mountain Reservoir -- 99.999% frozen. A couple dozen waterbirds 
> were squeezed into a waterhole the size of a bathtub.
>
> Lake Granby -- Completely open, but fog was a big problem when I arrived 
> at 10:00 AM and didn't completely clear until after 11:00. Once it did, I 
> found more birds than anywhere else today, including 300+ Common 
> Goldeneyes, 34 Barrow's Goldeneyes, 3 species of grebe, and 1 Common Loon.
>
> Windy Gap Reservoir -- no open water.
>
> Williams Fork Reservoir -- Completely open, but water level is fairly low. 
> A fair number of ducks and 2 Common Loons.
>
> Wolford Mountain Reservoir -- Mostly open, but not many birds. This is 
> where almost all the mergansers were, though.
>
> Green Mountain Reservoir (Summit County) -- Completely open, but very few 
> birds.
>
>
> As far as I can tell, nobody birded the reservoirs in South Park this 
> weekend. That seems like a prime location for the eiders to show up. 
> There's also plenty of Front Range water that doesn't show any recent eBird 
> checklists. 
>
> If you've looked for the eiders this weekend, let us know about it. 
> Likewise if you are planning to hit any key spots in the next few days. 
> Might be good to coordinate our efforts a little bit.
>
> Nathan Pieplow
> Boulder
>
>
>
>

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[cobirds] No eiders in Grand County, 11/20

[Nathan Pieplow]

Hi all,

I spent the day checking all the open water in and around Grand County that
I could find, in case the King Eiders went that way. I didn't see them.

Shadow Mountain Reservoir -- 99.999% frozen. A couple dozen waterbirds were
squeezed into a waterhole the size of a bathtub.

Lake Granby -- Completely open, but fog was a big problem when I arrived at
10:00 AM and didn't completely clear until after 11:00. Once it did, I
found more birds than anywhere else today, including 300+ Common
Goldeneyes, 34 Barrow's Goldeneyes, 3 species of grebe, and 1 Common Loon.

Windy Gap Reservoir -- no open water.

Williams Fork Reservoir -- Completely open, but water level is fairly low.
A fair number of ducks and 2 Common Loons.

Wolford Mountain Reservoir -- Mostly open, but not many birds. This is
where almost all the mergansers were, though.

Green Mountain Reservoir (Summit County) -- Completely open, but very few
birds.


As far as I can tell, nobody birded the reservoirs in South Park this
weekend. That seems like a prime location for the eiders to show up.
There's also plenty of Front Range water that doesn't show any recent eBird
checklists.

If you've looked for the eiders this weekend, let us know about it.
Likewise if you are planning to hit any key spots in the next few days.
Might be good to coordinate our efforts a little bit.

Nathan Pieplow
Boulder

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Re: [cobirds] Lake McIntosh 11/20

['Deborah Carstensen' via Colorado Birds]

I’ll add red rocks to the list. I was walking the stairs for exercise the other day and was amazed that I was surrounded by solitaires. I had never heard so much singing, it was a fantastic addition to my exercise!Deb Carstensen, Arapahoe county Sent from my iPhoneOn Nov 20, 2022, at 4:35 PM, Nathan Pieplow  wrote:Mark et al.,One of the cool things about solitaires is that they sing to defend a breeding territory in spring, and then they sing again in the fall to defend a wintering territory -- preferably one with a lot of berries. So I'm not too surprised to hear of territorial behavior in this species in November!Nathan PieplowBoulder On Sun, Nov 20, 2022, 3:48 PM Mark Miller  wrote:Hi Everyone, Today 11/20 I visited Lake McIntosh in Longmont to get some idea of what's going on with the ice and snow. The lake is 99% frozen, with just a Western Grebe, a few Mallards, scattered Canada Geese, and a clump of Ring-billed Gulls. No real surprise there. As I was walking back to my car, I heard a Townsend's Solitaire singing. I tracked it down and found it in a private yard, singing away (viewed from the street). The bird then flew over to a parked car and sat on the side-view mirror. It alternated between perching on the mirror and attacking its reflection in the driver side window. It's the third week of November and this bird is acting like it's spring. The homeowner came out and we had a brief chat; she saw the bird and seemed interested in it, but she had errands to run. I hope the solitaire gets a grip soon.Mark Miller Longmont, CO 



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Re: [cobirds] Lake McIntosh 11/20

[Nathan Pieplow]

Mark et al.,

One of the cool things about solitaires is that they sing to defend a
breeding territory in spring, and then they sing again in the fall to
defend a wintering territory -- preferably one with a lot of berries. So
I'm not too surprised to hear of territorial behavior in this species in
November!

Nathan Pieplow
Boulder

On Sun, Nov 20, 2022, 3:48 PM Mark Miller  wrote:

> Hi Everyone,
>
> Today 11/20 I visited Lake McIntosh in Longmont to get some idea of what's
> going on with the ice and snow. The lake is 99% frozen, with just a Western
> Grebe, a few Mallards, scattered Canada Geese, and a clump of Ring-billed
> Gulls. No real surprise there. As I was walking back to my car, I heard a
> Townsend's Solitaire singing. I tracked it down and found it in a private
> yard, singing away (viewed from the street). The bird then flew over to a
> parked car and sat on the side-view mirror. It alternated between perching
> on the mirror and attacking its reflection in the driver side window. It's
> the third week of November and this bird is acting like it's spring. The
> homeowner came out and we had a brief chat; she saw the bird and seemed
> interested in it, but she had errands to run. I hope the solitaire gets a
> grip soon.
>
> Mark Miller
> Longmont, CO
>
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> .
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Re: [cobirds] Lake McIntosh 11/20

[Lynne Forrester]

I see Townsend Solitaires squabble a lot in the winter as they are very 
protective of their winter food sources. I've had two locked together fall at 
my feet while hiking at Deer Creek Canyon.

Lynne Forrester
Littleton, east Jeffco

From: cobirds@googlegroups.com  on behalf of Mark 
Miller 
Sent: Sunday, November 20, 2022 3:48:35 PM
To: Cobirds 
Subject: [cobirds] Lake McIntosh 11/20

Hi Everyone,

Today 11/20 I visited Lake McIntosh in Longmont to get some idea of what's 
going on with the ice and snow. The lake is 99% frozen, with just a Western 
Grebe, a few Mallards, scattered Canada Geese, and a clump of Ring-billed 
Gulls. No real surprise there. As I was walking back to my car, I heard a 
Townsend's Solitaire singing. I tracked it down and found it in a private yard, 
singing away (viewed from the street). The bird then flew over to a parked car 
and sat on the side-view mirror. It alternated between perching on the mirror 
and attacking its reflection in the driver side window. It's the third week of 
November and this bird is acting like it's spring. The homeowner came out and 
we had a brief chat; she saw the bird and seemed interested in it, but she had 
errands to run. I hope the solitaire gets a grip soon.

Mark Miller
Longmont, CO


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Re: [cobirds] Lake McIntosh 11/20

[Patrick O'Driscoll]

Mark, I was surprised at such behavior earlier this fall as well.
I live near Denver City Park, where one day last month I found a juniper
tree with as many as 10 of them singing loudly, chasing each other in and
out and around the tree, and generally raising a ruckus.
After checking Cornell's Birds of the World, I found out why:
Townsend's Solitaires, which breed in the high country and spend winter
down here among us, are highly territorial in winter, seeking to protect
berry-laden junipers and other food-source trees from other solitaires and,
indeed, from other berry eaters like American Robins and Cedar Waxwings.
(I saw a Townsend's in City Park last month chasing individuals of both
those species away from its territory near the Denver Museum of Nature +
Science.)
It might be coincidental, but over here in east-central Denver, I'm
seeing more of them this fall than ever before.
I counted 5 this morning in City Park, and yesterday a pair chased each
other around a curbside maple tree outside my house just off East Colfax
Avenue.
As for that mirror encounter you reported, I also saw one 10 days ago in
the City Park West neighborhood about 3 blocks west of the park, flying
repeatedly from the ground up into a front window of a house, trying to
attack its own reflection.
So, it appears your Townsend's was behaving normally for this busy time.

Good birding,

Patrick O'Driscoll
Denver



On Sun, Nov 20, 2022 at 3:48 PM Mark Miller  wrote:

> Hi Everyone,
>
> Today 11/20 I visited Lake McIntosh in Longmont to get some idea of what's
> going on with the ice and snow. The lake is 99% frozen, with just a Western
> Grebe, a few Mallards, scattered Canada Geese, and a clump of Ring-billed
> Gulls. No real surprise there. As I was walking back to my car, I heard a
> Townsend's Solitaire singing. I tracked it down and found it in a private
> yard, singing away (viewed from the street). The bird then flew over to a
> parked car and sat on the side-view mirror. It alternated between perching
> on the mirror and attacking its reflection in the driver side window. It's
> the third week of November and this bird is acting like it's spring. The
> homeowner came out and we had a brief chat; she saw the bird and seemed
> interested in it, but she had errands to run. I hope the solitaire gets a
> grip soon.
>
> Mark Miller
> Longmont, CO
>
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> .
>

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[cobirds] Birds, Whales, & Algae with Boulder Audubon

[Sydney Rayl]

We hope to see you at our final BCAS program of 2022, *Birds, Whales, Algae 
and Earth's Living System: A Seamless Continuum* with Martin Ogle. Before 
the program, we also invite you to join us for Boulder County Audubon’s 
50th-anniversary 
celebration 
 from 5-7 
pm. This celebration will also be your first chance to register for the 
return of our *Interludes with Nature* 

!

Note:*This program will be in-person only. It will not be recorded or 
presented online*.

Birds are not simply a class of animals, but a seamless continuum of 
Earth's living system! So, too, are all other organisms, which co-evolve 
with everything else on Earth's surface as a single living system. In this 
multi-media presentation, Martin Ogle brings a 37-year career as a 
naturalist, Earth scientist and storyteller to bear in exploring fantastic 
new understandings of Life on our planet. How do birds, whales and algae 
ensure the fertility of the land? How does bird migration reveal a network 
of senses that allows our living system to thrive? How do these insights 
create “Earth-wise humans?”

Many of us in Boulder Audubon know Martin Ogle from his exemplary work with 
Lafayette Open Space as the coordinator of “Lafayette Birds” and creator of 
“The Shack” interpretive center at the Bob Greenlee Preserve at Waneka 
Lake. He had a 27 year career as Chief Naturalist for the Northern Virginia 
Regional Park Authority, after which he moved to Louisville, Colorado, with 
his family and started his own education and consulting business. *Learn 
more here 
*
!

*When*: Tuesday, November 22, 7:15 - 8:45 
*Where*: Unitarian Universalist Church of Boulder (map link 

)

We hope to see you there!


*A note on COVID-19 in light of our decision to return to in-person 
meetings:*

We ask that all in-person attendees respect the Church's COVID-19 policy, 
which is that all persons who enter their building must be fully vaccinated 
against COVID-19. In an effort to protect the more vulnerable members of 
our community, we also ask that attendees follow these guidelines


   - Wear a mask over nose/mouth
   - Stay at home if experiencing symptoms, have a known exposure to 
   COVID-19, or have tested positive and are within the quarantine period
   - Confirm a negative test result the day of the event if you have 
   recently tested positive or experienced symptoms.

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[cobirds] Re: A measure of the increase in eBirding in Colorado

[Gregg Goodrich]

David

Stunning graphs documenting the amazing increase in number of checklists on 
eBird. Thanks for doing this interesting analysis.

I will take a guess at the bigger increase in checklists in 2014. Cornell 
released the eBird mobile app in June of 2014. Before that time their were 
some birders that used BirdLog to log birds on their smart phones. Cornell 
took over BirdLog and converted it to eBird mobile and that really ushered 
in the use of smart phones to enter bird lists in the field as they birded. 
Here is a link to the first announcement of eBird mobile.

 https://ebird.org/news/ebird_mobile_ios1/

Gregg Goodrich
Highlands Ranch


On Friday, November 18, 2022 at 11:36:17 AM UTC-7 dsud...@gmail.com wrote:

> CoBirders,
>
> It is obvious that there has been a dramatic increase in the number of 
> birders in Colorado over the last 15 years (and longer), and with that came 
> a great increase in the use of eBird. Curious about this, I obtained the 
> number of complete eBird checklists per year in Colorado for the period 
> 2007 - 2022 (year to date through the 2nd week of November). That data is 
> shown below in Figure 1, showing the steady increase over this period. The 
> apparent drop in 2022 is only because the chart is still missing 6 weeks of 
> data from the end of this year. Using the average number of complete lists 
> per week, the 2022 total can be projected to the end of this year, and it 
> then shows continued growth through this year (Figure 2). In the end, the 
> 2022 total will likely be more than shown because December has some active 
> eBirding weeks that may be above the weekly average (due to CBCs, I think). 
>
> Figures 1 and 2 show steady and even increasing growth over this period, 
> really kicking in over the last 10 years, with the (projected) rate slowing 
> in 2022. There are two increases in the rate of growth over the general 
> trend that I see on the lines: one in 2014 and the other - a steeper rise - 
> in 2020. The later must be the Covid impact,  when more people were birding 
> and with more opportunity to submit checklists. I believe I know what the 
> 2014 rate increase represents, but I won't post here on that now. I'll 
> wager few can guess the likely cause of that extra upward angle in 2014. 
>
> [image: image.png]
> *Figure 1.* Number of complete checklists in Colorado year to date 
> (current through the 2nd week of November)
>
> [image: image.png]
> *Figure 2. * Number of complete checklists in Colorado with projection 
> through the end of 2022
>
> Then I was curious about how Colorado's eBird growth compared to other 
> western states. I selected California, my home state, with a much larger 
> population than Colorado and presumably lots more eBirders. And I chose 
> Wyoming, as a neighboring state, with a much smaller population of people 
> and eBirders. The results are shown on Figure 3 (using 2-year intervals for 
> this chart). All three states have the same general growth, but the scale 
> of the graph with CA included makes it hard to appreciate the change in WY, 
> with an order of magnitude difference in the number of checklists per year 
> between those states. Both showed an increase in the 2020 Covid period, 
> although with the 2-year interval this is less apparent on the graph than 
> in Figures 1 and 2.
>
> [image: image.png]
> *Figure 3. *Comparison of eBird growth in Colorado, California and Wyoming
>
> *Table 1.* Number of complete checklists in the three states for 2-year 
> intervals, 2007-2022 (year to date).
> CO CA WY 
> 2007-2008 18160 62167 2350 
> 2009-2010 27764 130327 3692 
> 2011-2012 45435 230234 7104 
> 2013-2014 90591 371325 12986 
> 2015-2016 131061 439959 16292 
> 2017-2018 197940 592518 33281 
> 2019-2020 297300 806772 46265 
> 2021-2022 354267 964379 51242 
>
> David Suddjian
> Ken Caryl Valley
> Littleton, CO
>
>

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