We bought 3 call ducklings and were asked if we would take the tiny runt and try to raise it. We said sure and it has lived thus far and does alright but the other 3 grow and this one has grown very little if at all. Is it a dwarf? is it sickly? Can i give it something to help it be healthier? Don't bother telling me to cull it....I won't cull the call! The plucky little thing has survived for 3 weeks and I just want to know if there is anything else that I can do to help it be healthy. We are feeding them game bird starter.