Hello all, its been a long time since I posted on here. But... recently I ordered Pekin ducks from a hatchery here in the U.S. out of the six that survived the trip (its a long story so please dont ask) two of them have lite pinkish bills. And two also have crest on their heads, so my opinion is that there seems that there maybe crossbreeding going on in the Pekin World. As we know Aylesburys have a pinkish bill. And of course in order to get the crest you have to have a parent that is crested. I know I didnt really answer your question but IMO thats most likely whats going on.