Every day I make my egg run and usually find about 2 out of 5 that have cracks! http://farm3.static.flickr.com/2629/4121963979_31ac64b91c_o.jpg They usually are not all the way through like that.. its usually just cracked.. no actual holes. Does anyone know what those purple little vein things are? Could the cracks be caused by the bottom of the nesting boxes being exposed? Or could they just be laid that way? OR is there an evil chicken pecking away at everyones eggs?