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So what are the "subtle differences in head shape and behavior" for those
of us who have real problems with the song?

Sandy and Mark Turner
Lyman, NH

On Sun, May 15, 2016 at 4:15 AM, Bryan Pfeiffer <[log in to unmask]>
wrote:

> Greetings, VTBIRDers:
>
> Philadelphia Vireos seem to be passing through our region. eBird reveals
> numerous sightings in northern New England and points north during the past
> two days, including a male during my guided outing to Berlin Pond
> yesterday. He sang quietly a few times for us (as we were tracking down a
> few of our 14 warbler species on the day).
>
> One field mark for Philadelphia Vireo that's left out of our guidebooks:
> After watching many Warbling Vireos, and after chasing the songs of many
> Red-eyed Vireos, when you finally meet up with a Philadelphia Vireo (with
> its subtle differences in head shape and behavior), a kind of warm euphoria
> washes over your soul. That's confirmation for this species beyond ordinary
> field marks.
>
> Best,
> Bryan Pfeiffer
>
> --
> [log in to unmask]
> http://www.bryanpfeiffer.com
>