I finally found someone in the area that will have ducklings ready June 4th. They have Sliver Appleyards and Cayuga both. She said they do NOT sex them though . Hoping I do not get all drakes. She said they are $10/each. My question is..I only want 3-4 tops. Would you mix a large duck like the Appleyards with a smaller duck like the Cayugas? OR should I just go with one breed, being I only want 3-4 ducks? Thanks!