Do You Know What Happened To This Bird?

Found: Dead Bluebird.  Looks like he could be playing dead, but I suspect not.  I do suspect foul play...just not sure what type.  Stacy suggests a basilisk may be slithering through my neighborhood in the hours after dark.  A squirrel, sprawled on his stomach, found last week only three houses down from this bluebird seems to suggest a pattern...  I am on the case!