Leaving out free choice oyster shell is fine, and actually may tell you when they are close to or just about to start laying... mine will start eating it right before they lay... and once laying, I feed all of mine a layer feed, it is just fine for ducks....
Some can start early, 5 months... some later at 6 or 7 months (I have had full sisters vary like that even)... and even had a couple push it to 9 months... it all depends on the individuals...
Some can start early, 5 months... some later at 6 or 7 months (I have had full sisters vary like that even)... and even had a couple push it to 9 months... it all depends on the individuals...