Re: [cobirds] Re: Arctic Tern, Larimer County

2021-10-25 Thread Nicholas Komar 
Here are some more photos and audio of this interesting tern at Horseshoe 
Reservoir (southwest corner), Loveland, from earlier this evening (see link 
below). The two late afternoons that I have observed this bird, it has flown 
off at the end of the day toward Lake Loveland, where presumably it is roosting 
with the gull flock. Both times it was vocalizing as it flew overhead. So it is 
an opportunity to audio-record it. I believe the audio in the linked eBird 
checklist supports the ID of Arctic Tern. I might mention that I recorded this 
audio with the Merlin app (free from Cornell Lab of Ornithology). Merlin did 
not ID the vocalization. Arctic Tern is not yet in their database. Common Tern 
is. 

Here is the link to the eBird checklist with photos and audio. 
https://ebird.org/checklist/S96708828.

Nick Komar
Fort Collins CO


> On Oct 25, 2021, at 5:11 PM, James Bruening <87211...@gmail.com> wrote
> 
> All,
> 
> Thanks David for getting the word out.  I originally found this Tern this 
> past Thursday and based on some blurry photos that I was convinced showed 
> dark secondaries that would have made it a Common Tern not an Arctic Tern.  
> It was certainly short-legged and shorter-billed but thought being a young 
> bird and getting dark outside that I'd stick with that ID until better photos 
> were procured.  I finally got convincing (to my birdbrain) photos that show 
> clean, white secondaries that tipped the scales for me on the ID.  I believe 
> the dark secondaries I was seeing was nothing more than dark, negative space 
> between the feathers.  A lot of field marks go blurry when birds are far 
> away!  But big shoutout to Nick Komar who just would not let up on this bird 
> and sent what decent photos he had out to the greater birding minds amongst 
> us to get feedback.  The bird has been most often seen on the spit in the 
> southwest corner of the reservoir.   Horseshoe Lake is accessible on that 
> southwest corner if you park on 41st Street and cross Monroe.  This bird has 
> already been seen by many so hopefully it will stick for a few more days.  
> Moral of the story I guess is that it's ok to report Sterna sp first and get 
> better pics.  I will add a bunch of pics but a few of them can be found on 
> this checklist:
> 
> https://ebird.org/checklist/S96706316
> 
> Bird is the word!
> 
> Josh Bruening
> Fort Collins
> 
>> On Monday, October 25, 2021 at 4:46:31 PM UTC-6 davidto...@gmail.com wrote:
>> Hi all,
>> 
>> I was asked to post here that the bird thus far being reported as a Common 
>> Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic 
>> Tern. I am not the first to ID it as such, and I believe (correct if wrong) 
>> Josh Bruening is the original finder.
>> 
>> Here is a list with pics.
>> https://ebird.org/checklist/S96693524?view=photos
>> 
>> 
>> 
>> Best,
>> 
>> David Tonnessen
>> 
>> 
> 
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Re: [cobirds] Re: Brown-headed Nuthatch in western KS

2021-10-25 Thread Timothy Barksdale 
Hi Cobirders,
Because Dispersal is a function to spread genes and increase diversity, I 
would expect the source of wandering birds to not be from areas which are 
newly "colonized".
Missouri's reintroduced birds did breed successfully, and there is abundant 
habitat to "fill in" within a few miles of the reintroduction location, let 
alone within a few counties away.

Because of all of the energy saving factors naturally built in to birds, I 
just can't see the Missouri birds leaving.

In other species like Ruffed Grouse, there are well know factors in which 
young males up and fly long distances. The "Crazy flight" is a genetic 
mixing tool to increase diversity in sedentary bird populations and 
normally occurs from densely populated ones. So think about density as the 
major factor from where the birds originate. Look for highly concentrated 
areas, perhaps on eBird maps, and you might find ideas. 

Should a bird like that be captured and banded a very small amount of blood 
or tissue could be analyzed to find the markers indicating the source 
location. God forbid that it would be collected.

Tim
Birdman Productions 
Choteau, MT
BIrdman Adventures
Mokane, MO


On Sunday, October 24, 2021 at 11:48:06 AM UTC-5 davidto...@gmail.com wrote:

> I believe it was determined that all the birds reintroduced in Missouri 
> were banded, and this one isn't. But I suppose it could be an offspring to 
> them if those birds successfully bred and the young weren't banded.
>
>
> David
>
> El dom., 24 de octubre de 2021 10:03 a. m., Dave Cameron  
> escribió:
>
>> Brown-headed Nuthatch was re-introduced last year in the Ozarks in 
>> Missouri.  Possibly this is a wandering member of that population.
>>
>> Dave Cameron
>> Denver
>>
>> On Friday, October 22, 2021 at 10:03:06 AM UTC-6 Brandon wrote:
>>
>>> Colorado birders should be on the lookout for this species.  One is in 
>>> Garden City, Kansas, only 70 miles from the Colorado border.  A few 
>>> Colorado birders got to see it yesterday morning.  Since Pygmy Nuthatches 
>>> aren't really wandering around this fall, if you see one in eastern 
>>> Colorado, be sure it isn't a Brown-headed Nuthatch and let us know.  
>>> Colorado hasn't had this species so far.  The bird in Garden City, is the 
>>> furthest west one to be found ever.
>>>
>>> Brandon Percival 
>>> Pueblo West, CO
>>>
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>>  
>> 
>> .
>>
>

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[cobirds] Re: Arctic Tern, Larimer County

2021-10-25 Thread James Bruening 
All,

Thanks David for getting the word out.  I originally found this Tern this 
past Thursday and based on some blurry photos that I was convinced showed 
dark secondaries that would have made it a Common Tern not an Arctic Tern.  
It was certainly short-legged and shorter-billed but thought being a young 
bird and getting dark outside that I'd stick with that ID until better 
photos were procured.  I finally got convincing (to my birdbrain) photos 
that show clean, white secondaries that tipped the scales for me on the 
ID.  I believe the dark secondaries I was seeing was nothing more than 
dark, negative space between the feathers.  A lot of field marks go blurry 
when birds are far away!  But big shoutout to Nick Komar who just would not 
let up on this bird and sent what decent photos he had out to the greater 
birding minds amongst us to get feedback.  The bird has been most often 
seen on the spit in the southwest corner of the reservoir.   Horseshoe Lake 
is accessible on that southwest corner if you park on 41st Street and cross 
Monroe.  This bird has already been seen by many so hopefully it will stick 
for a few more days.  Moral of the story I guess is that it's ok to report 
Sterna sp first and get better pics.  I will add a bunch of pics but a few 
of them can be found on this checklist:

https://ebird.org/checklist/S96706316

Bird is the word!

Josh Bruening
Fort Collins

On Monday, October 25, 2021 at 4:46:31 PM UTC-6 davidto...@gmail.com wrote:

> Hi all,
>
> I was asked to post here that the bird thus far being reported as a Common 
> Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic 
> Tern. I am not the first to ID it as such, and I believe (correct if wrong) 
> Josh Bruening is the original finder.
>
> Here is a list with pics.
> https://ebird.org/checklist/S96693524?view=photos
>
>
>
> Best,
>
> David Tonnessen
>
>
>

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[cobirds] Arctic Tern, Larimer County

2021-10-25 Thread David Tønnessen 
Hi all,

I was asked to post here that the bird thus far being reported as a Common
Tern at Horseshoe Lake in Larimer County is in fact a (hatch-year) Arctic
Tern. I am not the first to ID it as such, and I believe (correct if wrong)
Josh Bruening is the original finder.

Here is a list with pics.
https://ebird.org/checklist/S96693524?view=photos



Best,

David Tonnessen

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