Duck laying soft shelled eggs

[turtlefrog2]

Give her the Calcium Gluconate by mouth. or over a small amount of treat so she gets full dose. 1ml. wait 24 hr if she is still laying soft shell give another dose and continue until she is laying hard shells for at least a week. You could also use calcium citrate and sprinkle over the oyster shell. After she is back laying normally.
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
wouldn't hurt to start on Layer.

Are you using the 23% calcium gluconate? I'm having the same problem with my Khaki Campbells.

 

[Miss Lydia]

Yep this is it.

 

[Galaxyfalcon]

Strangely enough my girl was doing well enough for a bit after we switched to layer pellets but just laid two soft eggs in a row so we're doing a bit more of this treatment for her to help her out again.