2.5 week old Anconas making weird noise

[Celeeste]

Hello! I'm a first time duck and chicken owner and I have a question. I have 2 Anconas, 1 Cayuga, and 1 Rouen ducks and recently I've been hearing a deeper kinda quack-like noise coming from one of my ducks, I believe it's Patty the Ancona, however I read that ducklings don't get their voice until around 6 weeks. Are they just maturing fast? They're all 2.5 weeks so that seems really early.

Also, one of the chickens or ducks are make whistling noises every once in a while, what is that?

Thanks!

 

[Isaac 0]

Hi, Welcome to BYC!

Could you post a video?

 

[Celeeste]

Hi, Welcome to BYC!

Could you post a video?

Now they're 3.5 weeks and she's making the noise constantly, I assume it's her maturing