I call that Quack Wars.
I have four ducks that are usually paired off 2x2. When the two pairs are together they're super quiet. When they go in different direction the talker for each pair starts quack-yelling at the other pair to convince them to join them. It continues until one pair moves and they're all together.
Glad to hear you found a solution :).
LOL< Quack war. I like that.