How can you sex East Indies ducks? I have 2 that absolutely love each other and are inseperable. They were supposed to be females. Iif they are girls...what age will they lay eggs? And do they only lay eggs during a specific time of year? They shouuld be old enough to lay, if they are girls, but there have not been any eggs yet. If they are boys, wiill they be ok with each other? We have a large wild population of mallards that are allll over our yard all the time, but I no longer allow my ducks to free range. Will they fight, if males, over this wild population that they can see, but not get to?