[va-bird] Black-capped/Carolina line of demarcation

Hi all,

I know that the border between Black-capped and Carolina 
Chickadees is less of a border than a long zone of mixing and 
intermingling, a sort of genetic DMZ...but are there areas of VA in 
which one can be reasonably certain that what one sees is a Black-
capped?  For instance, what about Great North Mountain, west of 
Basye (Shenandoah County)?

I'm asking b/c I remember a recent post on the subject of genetic 
markers for these species, and as Black-cappeds are *very* hard 
to get in NC, even in the high mountains, I thought I'd see whether 
the area around my mother's place (in Basye, surprise) might be a 
place I could snag these.

Best to all,

-Sandy
--
Sandy Cash
Durham, NC
scash@xxxxxxxxxxxxxx
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