drake or duck

So I was thinking I had a bunch of drakes but then I read the bill’s are greenish and all mine look slate but the heads look darker than body so….what do you all think?

Hey everyone! My Welsh Harlequin duckling Charlie is six weeks old. I bought her as a sexed female, but now I’m not so sure if ‘she’ is actually a drake. First off, her beak never turned purplish black like my other duckling (who I’m positive is a female) did. It’s a lightish pink with a black...