I bought 2 mallards and 4 swedish ducks, supposedly chocolate, doesnt matter really as I love their personality and how silly they are, but was more wondering how you tell the difference between the sexes as these are my 1st swedish ducks, 3 have grey bills and make more of a quacking sound and one a tan-ish bill (far left) like the mallards and make more of a honking sound...I am hoping that this 1 is a male and have 3 females (eggs )......anyone know about this breed?? I would love to find out but cant seem to find any answers on them! Much appreciated.