Around 2:00 this afternoon, I found a mixed flock of warblers feeding in the shrubs at the end of "Lover's Lane", the observation area just northwest of the Red Bridge. One of the birds stood out because of its size (quite large) and its steady tail pumping. Its plumage vaguely resembled that of the Magnolia Warbler, but the bird was a good deal larger than a Magnolia, larger even than the Bay-breasted and Blackpoll warblers in the same flock. I hesitate to say it was a Kirtland's Warbler for sure because of that species' rarity and the fact that I've never seen one before. Other birds in the same flock included a Black-and-white Warbler, a Palm Warbler, and a Northern Parula. The putative Kirtland's was one of the birds in the flock that responded strongly to pishing.
I can't go back tomorrow (Sunday) because of other commitments. And I certainly wouldn't encourage anyone to go out of their way in hopes of refinding this bird. However, if you're planning to be in the area anyway, and you do see a mixed flock of warblers, you may want to keep your eye peeled for a large, tail-pumping warbler that is not a Palm or a Prairie or a Waterthrush.
"Lover's Lane" ends in a semi-circle of seven large, flat stones, the middle one of which has the words "Lover's Lane" scrawled on its face. If you're looking at this stone face-on, then the flock of warblers was in the shrubs behind the three stones to your right.
