Did they sell me drakes? Do hens ever rasp instead of quack?

Yikes. Trouble with the gosh darn feed store.

First they sold me a khaki campbell and said it was a runner. I had a feeling something wasn't right but I thought she'd straighten out or something with age. But nope. She's definitely a khaki campbell but of course I got attached so...what to do what to do.

But now my "girls" are a couple months old, no longer peeping like babies, but they have raspy hoarse quacks! They don't sound at all like my runner hens. But no drake feathers...

I have ducks for egg production only, for us to eat! Not for breeding or hatching egg, not just for the heck of it...I don't want boys. Did I get boys? The runner is about the same size as my 6 month old laying hens, but "she" was born mid-May.

What the heck?! When do drake feathers show up, do hens ever rasp, do khakis sound drastically different from runners, and what are other signs these may be boys? If I have to re-home and raise new babies I wanna know so I can do it NOW.