I am very new to this, please. I have 4 Ayem Cemani chicks, about 3 months old. One is a runt and that is another subject (I will keep her away fromt he rooster), one may be a rooster... I mean the odds are, but at 3 monthsn they still all look the same, one slightly larger, so if I want to breed pure Ayem Cemanis...I have to keep them apart from other birds, correct ? Can this rooster be the one or should I assume he may be "related" and can't be the one? How exactly do I find out if they are fertilized and will hatch ? Will my hens just know to sit if I leave the eggs...and what if they are not fertile (the eggs)..and WHEN do I suppose the rooster and hens will be able to create fertile eggs. Can I leave the rooster with the hens as he has been since a chick ? Will he hurt them too young ? If I have the rooster in a mixed flock, I can assume cross bred chicks I suppose...so keep him separate or with just the AC if all I want are AC. I have a Whiting blue I also wanted to breed, so this breed will need it's own coop as well.... lastly, I will have to inject for vaccine..this sounds scary..is it easy? Thank you for understanding, I am a fast learner and do my research but I want chicken keepers advice...