Ok, so I have 10 Saxony ducks... They are all super pretty and healthy... But I am worried about the female to male ratio. I have 4 males and 6 females, is that ok? The females have not started laying is that why?? They have a big pond to play in during the day and run around and in the evening they go in the duck house my dad and I made! They dont have a light in there is that also making them not lay? They are 7 months old aproxamently! Please help!!