strange egg

[chick-lit]

I have a eight month old hen that has started to lay very thin shelled eggs and they are also light in color , they use to be brown all of my other hens shells are hard. I give them oyster shells and grit they free range . I also feed them good laying crumbles, she has been laying strange like this for about three weeks . All my hens a the same age and they all eat the same thing and there eggs shells are nice a hard. Maybe she is not eating the oyster shells ? If anyone has any ideas on what I can do I would appreciate it. Thanks

 

[Kat'sChicks]

Possibly PolyViSol WITHOUT iron, plain yogurt.....have you checked for worms, lice, etc.?

 

[chick-lit]

I give them yogurt and they don't have lice that I can see .... I haven't had the poop checked for worms would worms do that to eggs and wouldn't they all be having issue's??? They all look really look healthy nice red combs I also give them acv in their water.