Oh dear. Just been out to let the chickens out in to the garden for a bit of a free range. I noticed only 3 were out in the run and the one missing had been in the nesting box at 7am when I opened the coop - she seemed ok then. She's dead in the nesting box. The other 3 have been in and laid eggs next to her.
She's had egg laying problems over the past 5 months - laying very soft shelled eggs. I tried various things to try and boost her up, but nothing worked. She was fine yesterday - eating and prowling round the garden. I need to get her out the nesting box, but am feeling a bit wimpish and don't want to.