I don't know that this would affect Vermont, but here is an interesting note
from Rich Guthrie.
Sat, 25 Oct 2008 11:17:57
Subject: [MidHudsonBirds] Heads up - for Cave Swallows
Just a little heads-up. As in recent years, the weather patterns through
today and tonight in most of NYS suggest a Cave Swallow influx. Tomorrow
morning might be a good time to check waterfront locations for
possibilities. Also keep in mind that they seem to prefer bridges for
overnight roosts. And good luck if you go out. I plan to.
---Rich Guthrie, New Baltimore, The Greene County, New