Re: [cobirds] Re: Archilochus sp. ID

[Caleb A]

Thank you David and Nick! Really great to learn from the experts 
*The birds are happy, and so am I*

*~Caleb Alons, Larimer County*
On Friday, August 14, 2020 at 5:43:27 AM UTC-6 Nick Komar wrote:

> Scott and Caleb, I believe this is juv female Black-chinned. Completely 
> green central tail feathers rules out Calliope, which should have blackish 
> tips.  Crown is grayish (Ruby-throat would be greener). It looks like it is 
> pumping its tail up and down, a behavioral trait of Black-chinned but not 
> Ruby-throated). Bill is short due to young age. Broad-tailed would have 
> more buff on flanks and rufous base of outer rectrices (tail feathers).
>
> Nick Komar
> Fort Collins CO
>
> On Aug 13, 2020, at 8:19 PM, Caleb A  wrote:
>
> Hi Scott!
>
> I'm not very good with hummers, but this looks like a Broad-tailed 
> youngster to me. Definitely curious to hear what CObirds has to say on this 
> one, though!
> *The birds are happy, and so am I*
>
> *~Caleb Alons, Larimer County*
> On Thursday, August 13, 2020 at 7:46:19 PM UTC-6 Scott Severs wrote:
>
>> Any thoughts on the ID of this juvenile?
>>
>> Thank you,
>>
>> Scott Severs
>> Boulder County 
>>
>>
>>
>> -- 
>> Scott E Severs Longmont scotte...@gmail.com (Note the "E" in the address 
>> above) Sent from Gmail Mobile
>>
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>  
> 
> .
>
>

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Re: [cobirds] Re: Archilochus sp. ID

[Nicholas Komar]

Scott and Caleb, I believe this is juv female Black-chinned. Completely green 
central tail feathers rules out Calliope, which should have blackish tips.  
Crown is grayish (Ruby-throat would be greener). It looks like it is pumping 
its tail up and down, a behavioral trait of Black-chinned but not 
Ruby-throated). Bill is short due to young age. Broad-tailed would have more 
buff on flanks and rufous base of outer rectrices (tail feathers).

Nick Komar
Fort Collins CO

> On Aug 13, 2020, at 8:19 PM, Caleb A  wrote:
> 
> Hi Scott!
> I'm not very good with hummers, but this looks like a Broad-tailed youngster 
> to me. Definitely curious to hear what CObirds has to say on this one, though!
> The birds are happy, and so am I
> ~Caleb Alons, Larimer County
> 
>> On Thursday, August 13, 2020 at 7:46:19 PM UTC-6 Scott Severs wrote:
>> Any thoughts on the ID of this juvenile?
>> 
>> Thank you,
>> 
>> Scott Severs
>> Boulder County 
>> 
>> 
>> 
>> 
>> 
>> -- 
>> Scott E Severs Longmont scotte...@gmail.com (Note the "E" in the address 
>> above) Sent from Gmail Mobile
> 
> -- 
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[cobirds] Re: Archilochus sp. ID

[David Tønnessen]

Hey guys:
Caleb, the lack of any rufous in the rectrices points away from a 
Selasphorus ID.
Scott, while this is certainly a bird I would've liked to see better photos 
of because of what appears to be a relatively short, straight bill for an 
Archilochus, this feature doesn't seem out-of-range for a Black-chinned 
Hummingbird, having personally observed some variation in BCHU bill 
structure. The primary feathers from what I can see also look classically 
BCHU to my eye; broad and curved, like a paddle as I like to think. Some 
may point to how grayish the crown appears here which is typically a useful 
mark for separating adult Black-chinned and Ruby-throated Hummingbirds, but 
not so among young birds as juvenile RTHU will also sport extensive crown 
feathers lacking the green iridescence found in adults. Ultimately, I think 
it's a Black-chinned but would feel safest leaving it at the "Archilochus" 
genus level.

Keep birding while following COVID recommendations and maintaining other 
aspects of your health!
Best,

David Tonnessen
Colorado Springs

On Thursday, August 13, 2020 at 8:19:01 PM UTC-6 caleb...@gmail.com wrote:

> Hi Scott!
> I'm not very good with hummers, but this looks like a Broad-tailed 
> youngster to me. Definitely curious to hear what CObirds has to say on this 
> one, though!
> *The birds are happy, and so am I*
>
> *~Caleb Alons, Larimer County*
> On Thursday, August 13, 2020 at 7:46:19 PM UTC-6 Scott Severs wrote:
>
>> Any thoughts on the ID of this juvenile?
>>
>> Thank you,
>>
>> Scott Severs
>> Boulder County 
>>
>>
>>
>> -- 
>> Scott E Severs Longmont scotte...@gmail.com (Note the "E" in the address 
>> above) Sent from Gmail Mobile
>>
>

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[cobirds] Re: Archilochus sp. ID

[Caleb A]

Hi Scott!
I'm not very good with hummers, but this looks like a Broad-tailed 
youngster to me. Definitely curious to hear what CObirds has to say on this 
one, though!
*The birds are happy, and so am I*

*~Caleb Alons, Larimer County*
On Thursday, August 13, 2020 at 7:46:19 PM UTC-6 Scott Severs wrote:

> Any thoughts on the ID of this juvenile?
>
> Thank you,
>
> Scott Severs
> Boulder County 
>
>
>
> -- 
> Scott E Severs Longmont scotte...@gmail.com (Note the "E" in the address 
> above) Sent from Gmail Mobile
>

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