OK, I am a little worried about my pair of Buffs. Hercules and Eolis seem healthy enough but they have been loosing weight. I have been feeding them Flock Raiser and letting them out to graze on clover and feeding some wild bird feed from time to time as treats. I put out more than they can clean up in a day just to be sure I am not underfeeding them but still the stay skinny. I know I possibly need to worm them. What would you recommend?