male mallard makes a weird noise

[duckmom216]

what is this a hiccup? sneeze? only my two male mallards do it and i’m curious what it is or means… thank u! it made me upload a photo, but the video link is above ^

 

[casportpony]

All my male ducks do it, too.

 

[cheezenkwackers]

Yep! I call it the heehaw. They do it when they are feeling good!