Thin shelled eggs from laying duck in coop with 11 week old ducklings

[Ducketts]

So I got quite the odd situation. I have one duck that lays eggs and they keep getting eaten. I am seeing that it's because the shells are thin and easily break. The flock as oyster shell and is getting Purina Duck feed. The logical answer in my thinking is to give them layer feed. The only issue I have is that in my coop I have 3 laying ducks and 3 ducklings that are 11 weeks old. I know young ducklings shouldn't eat layer feed due to high calcium. Is there anything I can do to help the laying ducks get more calcium without risking the health of my younger ducklings?

 

[cheezenkwackers]

I had the same issue with one of my ducks (I feed Purina duck and have out oyster shell too). I bought a bottle of Durvet Calcium Gluconate from TSC. It is sold as an injectable for cattle. I use a needled syringe to draw out 1-2 mL and I squirt it on dry mealworms. I feed these to my girl who is laying the thin shelled eggs.

 

[Ducketts]

I had the same issue with one of my ducks (I feed Purina duck and have out oyster shell too). I bought a bottle of Durvet Calcium Gluconate from TSC. It is sold as an injectable for cattle. I use a needled syringe to draw out 1-2 mL and I squirt it on dry mealworms. I feed these to my girl who is laying the thin shelled eggs.

I will give that a shot, thank you! On a side note. A lot of their eggs are slightly mishaped, like just a little less symmetrical than they normally are. I'm not sure if it's just some stress because they just got the new flock mates or if it's from calcium issues. Everyone is happy and healthy and still laying pretty regularly otherwise.