We have 3 month old silkies (for sure 2 roos one crows and the other has quite a large comb) grand total of 7 silkies in our flock of 11. also have 3 large birds and 1 polish we think these 4 are pullets. How many silkie roos can we have? All are gentle birds and they dont fight yet. What if more are roos? Also, as far as eggs, how do we keep them getting fertilized and are they still edible. This is really bothering my 13 yr old. We do not want any chicks yet.