.@Eggcessive: I agree with you but the problem here is that the soft-shelled/shell-less egg has happened a few times and the hen's underweight by the sounds of it which indicates something worse and longer running than a once-off bodgy egg. From my experience a skinny bird that takes to the nest is a pretty serious warning sign.
So, do you think I should separate her and put her in somewhere to watch her? I have a small pet carrier, but we're not set up for anything else. Should she be allowed to go in the run during the day to get some exercise or just leave her in the carrier to see if she'll fatten up some? (and see if she lays any funny eggs there?) Or do you mean just put her in a box/carrier at night, rather than on the roost. Last night I left her in the nest and it was full of poop this morning. Normal-looking poo. Really, I just wanted to cuddle her! (But these hens came to us as adults and aren't that friendly.)
Like I said before, she seems to act normally, just at night, she goes to the nest instead of the roost.
Will a hen stress out if she's isolated and NOT lay eggs if I do this? Going to look at that previous post now that I have a little time...
I feed crumbles and just today mixed a little corn w/ it (just a little, though) and put the oyster shell in there, too. If I don't feed layer food, what do I give her?
I really appreciate all the help here!