I just wanted to follow up Bryan's e-mail with a bit of a clarification. To the best of my knowledge, the Ivory Gull has not been seen in the immediate vicinity of the Rouses Point bridge in some time (several days). Instead, the bird is being consistently seen about two miles south of the bridge, along the stone jetty that begins at the south end of Stony Point Road. To reach this spot, turn left (south) after crossing the bridge and drive through the village of Rouses Point. Continue south on NY Rt. 9B when Rt. 11 turns west. The first road on the left after this will be Stony Point Road. Follow this short dirt road to the end. The coordinates of the base of the jetty are: 44.971145°, -73.356158°.
I saw the Ivory Gull here on both Friday and Saturday, and according to the only report to NNYBirds on Sunday, it was seen here on Sunday as well. That is not to say that it can't move around in the area. It just seems like at this time, this specific location is the best place to look for the gull.
Although VTBIRD was quiet on the matter, I can report that the Ivory
Gull was still around the Rouses Point Bridge on Sunday. Those of you
who haven't yet seen the gull can view a couple of new images (and some
video) at The Daily Wing, including a nice shot from Marv Elliott:
http://www.dailywing.net/. Thanks, Marv!