i have a frozen whole chicken that i froze a few months ago. i froze it before the expiration date, but now it is past the expiration date. i believe there are giblets inside, but am not positive, so i would need to remove those first and in order to do that i would have to defrost it, at least partially. how long to defrost in the fridge and how will leaving it in the fridge to defrost (assuming at least a day probably more) effect the expiration? i would like to do it in the crock pot and just shred the meat and then make stock. how exactly should i go about cooking this bird?