Very cute, thank you. I will let them out today!
My advice would be to set the same patten/routine for bed time. That way when you do that action, they know what is expected of them. Like my clap, I don't clap at any other time except when it's bed time, so all the chickens, ducks, and geese know what I want. The chickens just don't wanna lose any daylight, lol. The phrase bird brained does NOT apply to them, I have found that ducks and geese are highly intelligent and trainable, more like a dog than a bird really.
So good luck and enjoy your babies!