Hi everyone! Long time lurker, first time posting. Got a question: I'm planning to get my first chickens from my local feed store, once my coop is ready. The store sells 5 month old Rhode Island Red pullets. My question is, what should I be looking for when I look them over? How closely do I need to inspect them? What are the most common health problems to look out for? Are mites or lice something to worry about? Thanks so much! I'm totally new to chickens so all advice is welcome.