I have 2 buffs and 2 black sweds 5 1/2 mons. For three wks Butter ( buff) has been laying each morning the past 2 wks she has laid 2 eggs each morning which I thought they only laid 1 per day but two eggs in her self made nest each morning same color different sizes I know its butter actually seen her lay one the other morning also have 4 white crested 4 1/2 mons. Which I assumed they want start laying for a little while. When will the other three that's butters age start to lay? The are on Purina layena feed and I provide oyster shell. Also does anyone know why one of my crested girls chooses to sit on Butters eggs? Thanks I'm very new to the laying process but the eggs are very yummy!