I am so happy to say my duck has laid an egg!! Unfortuently it was broken. But i was wondering if you should give them oyster shells so the shell is harder. again I was so happy i cried my duck is my baby LOL I also have 2 silkie roosters could they have broken the eggs? my drake seems harmless so i dont think it was him. but it was my ducks first egg and the cold could have done it since its like -20 but yeah. HELP!!!!!!!!