We incubated chickens for the first time this year. We had thirteen successful hatchings and then we had a chick that was apparently the result of a double yolk egg ( we had candled it and could not detect it was ). We were devastated. We don't know what to do. Please help ! He or she has an extra set of legs and from what we have observed ( via excrement ) also has two vents. Is there any hope for this chick ? Should we take him or her to a small animal vet? He or she is three days old.