[birding] swifts

[Kaynor Heineck]

The Vaux's swifts roosting in the Lebanon Hotel decreased from 3200 on May 1st to 90 on May 8th.  They went in at 8:50pm and 8:47pm respectively, and when we got there last night at 8:30pm all but 2 had already gone in - guess it was the temperature shift, and the dark, cloudy skies.

Question:  Does anyone know what time swifts tend to leave these roosts?  Has anyone been observing at any of the roosts in the area in the morning?

Kaynor
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.midvalleybirding.org/pipermail/birding/attachments/20100510/9f925a7b/attachment.html