I know there's probably an easy answer to this question but I can't find it . My pullets(Australorps and wyandottes) have been laying for about a month or so and the eggs are slowly becoming a consistent medium-large size. Are these ok to incubate? And what size egg would be to small to try in an incubator? This will be my 1st attempt at hatching and I want to be sure I have the best chance at success. Thanks in advance.