I can tell you from experience Muscovies are awesome, they are friendly and very mellow[unless they have ducklings] as you have found out, they are great mothers and wonderful broodies. usually around 4 weeks you should be able to start telling boys from girls, boys will start to get larger and have thicker legs. having a group of 11 you shouldn't have any problems telling sex pretty early. There is a site on Google called Muscovy central which shows colors. Sorry you can't add pics, we'd love to see them. They also wag their tails, and a way to a muscovies heart is through their tummies, mine love frozen peas thawed and dried meal worms.I love this thread. I want to add pictures of mine but the new system wont let me. Last weekend i brought a muscovy duck with 11 babies. Im wondering what the are like as in temprement? There has been a lot of controversy as to whether theyre friendly or vicious and a nusance. I cant really tell with mine as the duck is extreamly protective of her young. I am also finding it difficult to figure out coulours - i know it would be much easier with pictures! - but could you please post some pictures of young blck and brown ducklings so i have an idea? At what age would i know the sex too and how do i identify? thanks!