[obol] white-crowned sparrow in springfield

[Ann Chamberlain]

 I just went and looked carefully and my white-crown has a definitely 
yellow bill.  What subspecies would this be?  They  nest here in the 
summer and very rarely I see one in the winter.

Ann in Myrtle Creek

Harry Krueger wrote:
> Tom,
> I would love to know what subspecies (race) of White-crowned Sparrow 
> you hosted.  Sibley's Western NA guide gives good drawings of two 
> possibilities, a third, /Z.l. oriantha/, is very similar to the NGS 
> guide illustration of /Z. l. leucophrys/, the nominate or "eastern" 
> subspecies, but with a pink bill. 
> Subspecies identification, when possible, is often a great way to 
> understand the "origin" of birds... and makes birding that much more 
> rewarding and interesting.
>  
> J. Harry Krueger
> Boise, ID
> http://bird-brio.blogspot.com <http://bird-brio.blogspot.com/> 
> www.IdahoBirds.net <http://www.idahobirds.net/>
>  
>
> On Fri, Mar 28, 2008 at 1:25 PM, Tom Escue <tom-escue at comcast.net 
> <mailto:tom-escue at comcast.net>> wrote:
>
>     I have at least one WHITE-CROWNED SPARROW that appeared to spend
>     the winter at my house in Springfield. Is this unusual or was the
>     bird a very early arrival?
>      
>     Tom E
>
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