Unless you happen to build a strong bond,while they are tiny, ducks will revert to their nature.
By nature, ducks are followers. That's just what they do. To walk single file, is to do it the duck way.
Ducks never turn around and face those following. When a drake is leading and suddenly turns around, it means 'danger'. I learned, the hard way, years ago, that ducks turn their backs to a threat.
When you're walking and the ducks are following, and you want to stop and visit, hunker down like a mother hen without turning around. My ducks and chickens, gather around me, when I hunker down and just stay put, for a minute.
If I have a chicken or duck, that I'm trying to catch and they are evading me, I hunker down and stay still. It's a natural reaction for them to 'come to mommy'.
Ducks and geese are a funny sort. When you hunker down, they just stop because they get confused about what they are supposed to do now. ha It's like a "wait...what?" moment. If you sit still, long enough, they will get bored and either pass you by, gaining a new leader, or start pecking at your clothes to get you up and going again. If your ducks are strictly running on instinct, that's probably the only time you can get close and talk to them.
Have you ever watched your drake, ram his bill into the side of a dog just because he felt threatened? It's funny to watch the dogs reactions. Beware the bill. haha
Oh yeah, ducks and chickens can be taught to react to a sound, just like dogs and cats. Like smacking your lips to call your dog to dinner. You can pick a sound like clicking or smacking the lips, to associate with a treat. If you use it, every time you feed or give a treat, you can call your birds to you, any time you want.
I have a long and funny story involving a turkey. To make it short
she would come running when she heard me call out 'Gotcha One'. It meant I had a grasshopper in my fist. She'd jam her beak into my fist and grab her treat. Problem was, the chickens caught on.
judy