For all you 4H'er out there - I have someone who wants to show Muscovy for 4H but the birds are suppose to be "grown". So, are Muscovy considered "grown" at processing age of 12-14 wks or (at least for the girls) 5-6mo.? I don't want to sell her birds that aren't going to be old enough by her July 17th show date. THANKS!!!!