My young ladies have just started to lay. Ive had 9 small to medium hard shelled eggs . Now today I got a small paper thin shelled very light brown egg. Do I need to add Oyster shells or just give it time to see if they harden up. I think it came from a Black Sexlink.... My GSL was sitting on an egg this morning. SO I do think it came from my BSLs or the other GSL 18 weeks old. Leghorns laying small but hard eggs and Ive had 4 mediium hard shellled brown eggs.