How do I tell which eggs are Muscovies? All were given to me at once as a mixed batch. Problem is Muscovies take 6 days longer than ducks before they should go into lockdown from what I've read in BYC. Can ducks lockdown a day or 2 late & Muscovies a few days early? The breeder just has a mixed flock & all free range so no way to tell who's who. TIA.

