I have three runner ducklings that are 5 and 6 weeks old. Two of them are quacking up a storm and the other does not make any noise at all. In fact, she frequently opens "her" mouth like she wants to quack but nothing comes out. She has done this since I got this pair of chocolates at 3.5 weeks. The quiet one does not have particularly thick legs nor is "she" any larger than the other. It does not matter either way, especially since I am pretty sure (or just really hoping ) that the other two are girls.
Any thoughts on this super quiet kid?