Today i went out back to feed the chickens and to my surprise one of my roosters was pretty torn up i mean like lost most of his feathers he was in bad shape but he looks like he will recover. My chickens have a in closed coop they sleep in at night and its in a 20x24 fully caged run with a full roof i have seen squirrels in the pen can't find any way they get in i just seen here that some people have seen squirrels attack there chickens never thought we had to worry about squirrels too . We have hawks bobcats coyotes rattlers and now killer squirrels never a dull moment