Really, I don't know. It was very hot yesterday - over 90 for the first time this summer - and a thunderstorm came through at around 7pm. So thermal expansion/contraction cycles and maybe the rain could be responsible for loosening it, but I have no idea what actually made it drop off the chimney.
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timeasmymeasure
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Date: 2006-06-21 12:57 am (UTC)