Ernie has this adorable way of letting me know that he wants head scritches: he scratches the nape of his neck first, then he tilts his head towards me so I can scritch him. Because of that habit, the feathers at his nape are always scraggly and look flea-bitten. His other feathers are beautiful, and he isn't itchy anywhere else on his body. When he's gone without a bath for a while they get dusty, of course, but a shower takes care of that. I've read that some of your Pi's will also do the "demo scritch" thing when asking for scritches, too, so I was wondering if your Pi's also have those scraggly nape feathers as a result, too?