Hello duck nuts! I have 3 Mallards and 1 Khaki Campbell. All are 17 weeks. I am going a bit crazier than usual because I can't tell who is what. Every time I get within earshot and can SEE them.... they all shut up. I have tried spying with binoculars, sending DH out while I quack from the porch, sitting out by them for hours..... all to no avail. I haven't had any ducks for 20 years or more, anyone want to take a guess, please? Thanks for any ideas/suggestions! Forgot to say, no curly tail feathers evident yet.