I am a new chicken keeper,and have a couple of issues ,help..!spotted a LOUSE on one of my chickens,and while rummaging through her feathers,a HIDEOUS LONG BROWNISH BLACK THING crept away in a truly gruesome slinking fashion,I only saw its rear end,and that looked rather like the rear of an earwig but without the pincers.what the hell is it ? So I need a louse eradicator and any info on THE THING uggh,it makes me itchy just thinking about it.Also one of the chickens has the runs but I can't work out which one and its not getting better.they look cheery otherwise and are eating well-in fact they seem constantly hungry,is that normal? I am giving them constant access to layers pellet but they seem to be ravenous.