This is a very interesting report.  If you have details on this 
sighting, you should submit them. A number of "less common" warblers 
are,as you imply, in fact more likely in Vermont at this time of year 
than a Yellow (for example, Nashville, Tennessee and Orange-crowned).

Pipit

> Yesterday at Dead Creek my son Spencer and a Mascoma Audubon group 
> found a Yellow Warbler.
> According to e-Bird, this is the latest observation of this species in 
> Vermont.
>
> He will post a full list tonight.
> Doug Hardy, Norwich
>