[cobirds] Banding at CSR, El Paso Co., Sat

[Steven Brown]

Hey COBirders,

Banding has been hot and dry at Clear Spring Ranch this month. So far I’ve 
banded 200 birds, mostly low-average in daily numbers and diversity.
The majority of birds have been Yellow Warblers, Lazuli Buntings, and Chipping 
Sparrows. - no surprise there.

A few highlights: Yesterday saw a FOS Virginia's Warbler (Second-year male), 
and today a FOS Northern Waterthrush (HY). This was about the latest for my FOS 
NOWA in 10 falls there.  I’ve had two Alder Flycatchers so far (both HY, ID’d 
by consistent wing measures different from Willow), one Dusky Flycatcher, and 
one Least Flycatcher - all HY birds.

The Laz’s aren’t unusual - but by now I usually have banded several grosbeaks - 
Blue and Black-headed. This year I’ve only banded two - one Rose-breasted (SY 
male), and today a a hybrid  RBxBH After Hatch Year male with black and buffy 
bands on the head, prominent white bars on the primaries, and rose underwing 
and some on the flanks!

I’m not seeing the giant flocks of Chipping Sparrows I had last year (50 banded 
so far, compared with 350 by this time last year, and 1900 for the season!), 
but only one Clay-colored Sparrow so far, and no Brewer’s yet. Lastly - I 
banded a SY male Dickcissel, only my 5th at the ranch, all in the last four 
years.

Actually I’m not seeing a lot of movement yet, even by nesting species, and 
only a few recaptured nesting birds from last spring or previous seasons. I had 
a couple good migration wave so far - with 11 Yellow Warblers netted at the 
same time yesterday, and 8 on Thursday, all first thing on the morning - but 
not much besides those.

Anyway, I should be around most mornings there for a couple more months (!). 
More news to follow,

Good birding, 
Steve Brown
Colo Spgs

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Re: [cobirds] Gull ID help request: Chatfield Marina Sandspit

[Scott Somershoe]

The Lesser Black-backed Gulls were there at sunrise. They caught me off guard 
too! I had a Long-billed Curlew hanging out down there as well. Good mid-August 
bike birding! I had 4 Forster’s Terns on S Platte Delta straddling JeffCo and 
Douglas county lines. 

Scott Somershoe 
Littleton CO


Sent from my iPhone

> On Aug 14, 2021, at 11:25 AM, David Tønnessen  
> wrote:
> 
> 
> Hey Max,
> 
> Indeed it appears you found two Lesser Black-backed Gulls; a near adult 4th 
> cycle bird (notice the fleck of black in the bill for age) and a 2nd cycle. 
> Lesser Black-backed Gulls have contrasting dark wings compared to the rest of 
> their plumage even in younger plumages, and get a pale eye after their first 
> year. Like you said, the structure here is another great thing to look at; 
> long wings and heftier than a Ring-billed Gull with sharper bill angles, but 
> more petite than a Herring Gull.
> 
> This species has been increasing in this continent with occaisonal 
> oversummering birds having been found as far south as Central America.
> 
> 
> Best,
> 
> David Tonnessen
> Colorado Springs, CO
> 
> El sáb., 14 ago. 2021 8:46 a. m., Max Miller  escribió:
>> Good morning everyone,
>> 
>> I did not expect to be sorting gulls so seriously this morning at the 
>> Chatfield Marina Sandspit, but here we are.
>> 
>> As I was scanning the flock of Ring-billed Gulls to sort out any California 
>> Gulls (which were there, too), I noticed two birds that stuck out further, 
>> an adult and a juvenile next to each other in a smaller group of 
>> Ring-billeds maybe 30 feet from the greater flock.
>> 
>> Both were noticeably bigger than the nearby Ring-billeds, but not hugely so. 
>> The adult was quite a bit darker backed than any of the other gulls, had a 
>> yellow eye, a red spot on its bill, and legs I would describe as perhaps 
>> yellowish, but pretty drab though the light could play a role here. The best 
>> I can come up with is Lesser Black-backed, but my experience with that 
>> species is limited.
>> 
>> The juvenile was about the same size and seemed associated with the adult. 
>> It's eye seemed paler as I could make out a pupil. Again, light may play a 
>> role here. It had a unique shape I thought, but of course my gull ID guides 
>> are all at home so I hesitate to put any sort of ID on it in my mind.
>> 
>> Any input is most welcome - I took a number of digiscoped photos that are 
>> uploaded to my ebird checklist at the link below. Thanks to any larophiles 
>> here who might be able to validate or negate my observations on the adult, 
>> and provide any further clues for the juvenile.
>> 
>> 
>> https://ebird.org/checklist/S93202724
>> 
>> Good birding!
>> 
>> Max Miller
>> Denver, CO
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>> bird species and location in the subject line when appropriate
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> 
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Re: [cobirds] Gull ID help request: Chatfield Marina Sandspit

[David Tønnessen]

Hey Max,

Indeed it appears you found two Lesser Black-backed Gulls; a near adult 4th
cycle bird (notice the fleck of black in the bill for age) and a 2nd cycle.
Lesser Black-backed Gulls have contrasting dark wings compared to the rest
of their plumage even in younger plumages, and get a pale eye after their
first year. Like you said, the structure here is another great thing to
look at; long wings and heftier than a Ring-billed Gull with sharper bill
angles, but more petite than a Herring Gull.

This species has been increasing in this continent with occaisonal
oversummering birds having been found as far south as Central America.


Best,

David Tonnessen
Colorado Springs, CO

El sáb., 14 ago. 2021 8:46 a. m., Max Miller 
escribió:

> Good morning everyone,
>
> I did not expect to be sorting gulls so seriously this morning at the
> Chatfield Marina Sandspit, but here we are.
>
> As I was scanning the flock of Ring-billed Gulls to sort out any
> California Gulls (which were there, too), I noticed two birds that stuck
> out further, an adult and a juvenile next to each other in a smaller group
> of Ring-billeds maybe 30 feet from the greater flock.
>
> Both were noticeably bigger than the nearby Ring-billeds, but not hugely
> so. The adult was quite a bit darker backed than any of the other gulls,
> had a yellow eye, a red spot on its bill, and legs I would describe as
> perhaps yellowish, but pretty drab though the light could play a role here.
> The best I can come up with is Lesser Black-backed, but my experience with
> that species is limited.
>
> The juvenile was about the same size and seemed associated with the adult.
> It's eye seemed paler as I could make out a pupil. Again, light may play a
> role here. It had a unique shape I thought, but of course my gull ID guides
> are all at home so I hesitate to put any sort of ID on it in my mind.
>
> Any input is most welcome - I took a number of digiscoped photos that are
> uploaded to my ebird checklist at the link below. Thanks to any larophiles
> here who might be able to validate or negate my observations on the adult,
> and provide any further clues for the juvenile.
>
>
> https://ebird.org/checklist/S93202724
>
> Good birding!
>
> Max Miller
> Denver, CO
>
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> 
> .
>

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[cobirds] Gull ID help request: Chatfield Marina Sandspit

[Max Miller]

Good morning everyone,

I did not expect to be sorting gulls so seriously this morning at the
Chatfield Marina Sandspit, but here we are.

As I was scanning the flock of Ring-billed Gulls to sort out any California
Gulls (which were there, too), I noticed two birds that stuck out further,
an adult and a juvenile next to each other in a smaller group of
Ring-billeds maybe 30 feet from the greater flock.

Both were noticeably bigger than the nearby Ring-billeds, but not hugely
so. The adult was quite a bit darker backed than any of the other gulls,
had a yellow eye, a red spot on its bill, and legs I would describe as
perhaps yellowish, but pretty drab though the light could play a role here.
The best I can come up with is Lesser Black-backed, but my experience with
that species is limited.

The juvenile was about the same size and seemed associated with the adult.
It's eye seemed paler as I could make out a pupil. Again, light may play a
role here. It had a unique shape I thought, but of course my gull ID guides
are all at home so I hesitate to put any sort of ID on it in my mind.

Any input is most welcome - I took a number of digiscoped photos that are
uploaded to my ebird checklist at the link below. Thanks to any larophiles
here who might be able to validate or negate my observations on the adult,
and provide any further clues for the juvenile.


https://ebird.org/checklist/S93202724

Good birding!

Max Miller
Denver, CO

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