Bob,

I meant to put a question mark against that sighting. Sorry about that.

I did consult with the participant who had a much better sighting of the
bird than I did, and he too is not comfortable with confirming it as a
Philadelphia Vireo.

We had a broadside view of the bird. The first thing that caught our
attention was that it was not moving like a typical warbler, but had a more
deliberate style. It had a light lemony wash from the chin down to the
belly, with a paler vent. We were trying to get a better handle on key
pointers (e.g. the post-ocular stripe, supercilium) that would have helped
us set it apart from the Warbling Vireo, but it did the disappearing act on
us.

Unfortunately it was silent throughout the 20 seconds or so that we had it
in view.

Dhananjaya Katju
Washington, DC




On 5/19/07,  < > wrote:
>
>  Being such an extraordinary rarity, what were the details of the
> Philadelphia Vireo? Was it seen well? Was it singing? Thank you.
>
> --
> Bob Ringler
> Eldersburg MD
> 
>
>
> -------------- Original message --------------
> From: Dhananjaya Katju < >
>
> > I led 3 birding trips as part of the bioblitz organized by National
> > Geographic at the Rock Creek NP.
> >
> > I don't have the exact total for bird species sighted in a 24-hour
> period,
> > but it is between 80-82 species in all. A total of 20 warbler species
> were
> > observed by participants. Here's the list:
> >
> > Northern Parula
> > Tennessee Warbler
> > Yellow Warbler
> > Chestnut-sided Warbler
> > Magnolia Warbler
> > Cerulean Warbler
> > Cape May Warbler
> > Black-throated Blue Warbler
> > Black-throated Green Warbler
> > Blackburnian Warbler
> > Prairie Warbler
> > Bay-breasted Warbler
> > Blackpoll Warbler
> > Black-and-white Warbler
> > American Redstart
> > Ovenbird
> > Louisiana Waterthrush
> > Common Yellowthroat
> > Hooded Warbler
> > Canada Warbler
> >
> > Other notable sightings were:
> >
> > White-eyed Vireo
> > Philadelphia Vireo
>
>