I usually do 6 bantam eggs or 5 standard. I tried more (if you let them, they'll try to hatch dozens
) but ended up with lots of quitters. I can only assume they got cold, couldn't fit under etc...I would think it would depend on your silkie also. Is she rather large, or on the smaller side? Is this her first time, or is she experienced?
she's probably experienced as i got her free of my elderly great uncle, she probably classed as larger, im gonna see how many pot eggs she can manage before buying fertile eggs, plus im waiting a few more days to make sure she will sit