What's that sound my Drake sometimes makes?

[mrbstephens]

My runner duck (drake) sometimes makes this sound that is sort of like a bullfrog but lower like a tenor. Sounds like "GLUNK."

Is that a mating thing? Would anyone have a link for me that I can play for my husband to hear? I thinks I'm making it up.

 

[mnferalkitty]

He is trying to impress the girls

 

[duckyfromoz]

My boys make a noise that in some ways reminds me of a donkey- often accompanied by a very obvious head bobbing.

funny to watch some times....little show offs..