Anyone out there who knows how parasites manifest themselves? I have one Welsh Harlequin and one Magpie who are beautifully shiny and 'waterproof' and one Runner who's feathers look dull, even frayed on the wings, and she frequently twitches her wings. She also gets a rather waterlogged look in the rain or after bathing. Some bald spots but that might be the drake's doing. I inspected her for parasites but couldn't see any. Ideas as to what I should do??? I provide fresh water to bathe, and other than acting weird she seems fine, laying and all.