I have 4 call ducks - white with black spots. I had a pair of pekin ducks years ago and could tell the sex from the curly feather, but they don't have them yet. I got them on May 9th ranging from 1-2 weeks old. I also hear 1 duck has a loud honking sound where other 3 are more quiet when quacking at me for treats. When do they get the curly feather or do call ducks even get them? I thought I read the louder duck is the female? My daughter wants to name them and give them appropriate boy/girl names. LOL Also I would love other colors but I am having a hard time finding ducklings or fertilized eggs in my area I had to drive 2 hours for these ones and they don't have any left. Any ideas where to find fertilized eggs that can be shipped to me?