I want to get 4 Cayugas 3 female and 1 male and 3 Welsh Harlequin ducks for our backyard flock. My grand daughters can not eat any eggs from the store I have the chickens for eating eggs but would love to have duck eggs for baking. Both of my grand daughters want ducks also. DH is being very stubborn about this. So what is some good points that should convince him that ducks are a great idea. Need help. Also our my numbers okay with 1 male for 6 females or should I go 1 male and 2 females from each breed. Thanks for any help.