As of now I have 5 khakis and 4 scovies. I need to get more khakis because I have to many boys at this point and would like to add a few more girls rather then rehome the extra boy. So my question is how many ducks can fit comfortably in an 8X8 house? I have had as many as 13 living in it before but they were younger and smaller. They free range all day and are only locked in at night.