Hi Rick --

I don't know about your walnut trees, but the one the birds were in today has many tiny insects (like whiteflies) under the leaves. I think the vireos were gleaning these. By the way, the Philly we saw three days ago was also in a walnut....hmmm

Gail Mackiernan
Colesville, MD

 -------------- Original message ----------------------
From: 

> Gail and all,
>  This seems of interest to me, as almost every Philadelphia Vireo I  think I 
> have seen has been in a walnut tree. I wonder how many others have had  the 
> same experience, and also what is it about these trees that they seem to  like?
>  
> Rick Sussman
> Ashton, MD
>