On the ducky voices, some pekins are contrary. My son had 3 ducklings he raised from a few days old [Tractor Supply Co ducklings.] One, a crested, is a very noisy little duck. She is cute, she knows it She wants everyone else to know it. The other two were physically very similar through to 4 months old and silent. But we knew one was a drake as he developed a drake feather by 10 weeks old. The other is female, but she obviously had no need to make a noise as the very noisy little crested made enough noise for them all. The second female didn't start making a noise -- but when she did it was loud! -- until she was a year old. She now alarms very loudly when she sees a feral rooster that hangs around my son's garden.
In contrast, my male pekins chatter away all day and get very very noisy when they are excited -- when they see me. Their chattering away is very different from female pekin quacking and easily identifiable when you have heard it once. But don't go by volume alone: my pekin drakes are very loud when excited. And don't assume a silent duck is a drake!! Females when they quack, quack loudly. But they don't all find their voice early