Actually we have seen two female B-T Gs so far this spring gathering nesting material -- picking up bits of fluff and fine fibers and flying off with them into the woods. Whether they are really building a nest or it is just that their hormones are totally pumped and they are "practicing" I am not sure. According to the Atlas criteria do these actions constitute nest-building?  (Not sure how to interpret this activity...)

We also saw a B&W female apparently *really* nest-building a couple of years ago at Military Field -- she was making repeated trips to fluffy (willow?) catkins and carrying the fibers off -- so seemed to be actively constructing. These do nest in Little Bennett so maybe not so unexpected. 

Gail

 -------------- Original message ----------------------
From: "Frederick W. Fallon" <>
> Black-thr Green gathering nest material! Either that throws out 
> "gathering nest material" as a surrogate for "Nest Building" as an Atlas 
> "confirmed" code, or they're expanding their range something 
> considerable! Something to think about.
>