I've never seen Blue Jays pillaging nests, but Audubon depicted them as
egg-eaters:

http://picasaweb.google.com/lh/searchbrowse?q=blue+jay&uname=Avigraphicon&psc=G&filter=1&hl=en#9

--
Paul Dubuc,
Nyack, NY for the moment
Dayton, OH for the duration

at sign beween pauldubuc and gmail dot com

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