If he has the blue egg gene, yes. If not then it would depend on the hen I believe. I am not an expert on egg colors, sorry, I wish I was more help. Do you know what color his egg was that he hatched from?And so, if he mates with say, a Comet, is it possible to hatch Easter Eggers? I've never hatched eggs before & this was supposed to be a hen! But now I will have 4 roosters to 25 hens... Is that too many?