I have a few questions about my 20 week old chickens. Do different breeds lay earlier than others? What color egg does each breed lay (breeds listed below)? How often do they lay? 1.Barred Rock 2.Rhode island Reds 3.Easter Egger 4.Americauna I just started getting a brown egg a day and i am thinking it is one of my reds because she has her comb the most. does that have anything to do with it? thanks!