Trying To Hatch. I don't have an incubator and we will be doing it the old fashioned way-letting a hen set. Right now, my only broody hen is a silkie bantam. I have a plethora of (potentially) dumb questions. 1. How many eggs can I reasonably expect her to set on at one time. I want to try for two. Is that too much? 2. Do I need to separate her from the flock now or is it best to wait, or should I do it at all before any eggs hatch? 3. My silkie eggs are being fertilized by a very large RIR roo. IS that a problem? My mental image on this one is a toy poodle female being impregnated by a great dane. 4. One of the hen eggs I want to try to hatch is from an older hen-like four years old. Are they anything like human eggs and is there the potential for a freak of nature chick because of the hens age? See, I told you I had dumb questions 5. Any advice, tips, warnings? Almost all of my chickens are mutts-I have a RIR roo, two BR and a SLW hen, plus the silkies. I know my roo has been gettin busy with every one because he's not at all bashful or discreet about it.