I just bought two pekin ducks from a lady that said they are 4months old. When I showed up to pick them up, I expected them to be grown, but they are actually not..which is fine but I am trying to figure out their actual approx age. they are mostly feathered, but their wings are small, their bodies are smaller and leaner than a grown pekin, and they are going through a voice change. they make a beep/quack mixture sort of a squawk sometimes. Anyone have a guess as to how old you think they are? Here's some pics.