Why does my duck beatbox?

[Fangeddeer]

My duck hen moves her head sideways when she quacks, like beatboxing. Is this normal?

 

[Miss Lydia]

I don't know what beat boxing is. Maybe a video?

 

[sourland]

Duck hens generally exhibit this behavior in the presence of their chosen mate.

 

[Miss Lydia]

Duck hens generally exhibit this behavior in the presence of their chosen mate.

You know what beat boxing is? lol like head bobbing.