I have three ducks that are 6.5 weeks old or so. One peep/quacks and one quacks. The third doesn’t make any noise really. When they approach I only hear two voices although the third opens its mouth and it sounds like it’s whispering. Still too early to tell or do I need to order more ducklings?

I’m not sure if it’s hissing or whispering but it’s a very quiet duck. The other two are always making noise.