We have 5 ducks that appear to be Pekin (all white) and one possibly runner (white and tan/beige). We recently hatched 12 ducklings. They're about 5-6 weeks old now. 6 of them were black and yellow and now have brown on their chest and a pretty grayish (or brownish?)/white feathers on their back. They don't look anything like the parents. Can't find any other pictures that look like what we have. Just curious what other breed of duck might be mixed in. Dad (our only male) is a Pekin (or at least looks like a Pekin). I've posted pics of the parents, and the ducklings, both currently and when they were about a week old. Thanks!