Can someone help me with muscovy ducks? need help and information.?

hey i have two female muscovy ducks and i hade got a male muscovy duck a few weeks ago. sense we hade the male muscovy the females have been layin eggs. about 15 of them right now. but they arnt siting on them. why not? and do you think the eggs will hatch? and there is like 10 in a pile/nest and the others are in a differnt pile/nest or just randomly put around the coop? if you have any info to give me please do.