Prisoners locked in their cells for days on end report walls speckled with feces and blood. Birds have moved in, leaving droppings on the food trays and ice bags handed out to keep inmates cool. Blocked from visiting the law library, prisoners say they have missed court deadlines and jeopardized appeals. Unable to access toilet paper, one prisoner tore his clothing into patches to use for tissue. One thousand inmates incarcerated at Waupun Correctional Institution, a maximum-security prison in s