One of my hens (7 months of age) has been acting really weird over the past 2 hours. She was totally fine in the morning , laid an egg was running about, scratching etc but later on in the day she just stood in one place , without making any noises. She looked as if she tried pooing but could release anything. I went to pick her up and she was absolutely still. I then put her back in the run and discovered an egg yolk and white on the floor with out a shell as if someone cracked an egg. Her poo looked green and foamy after wards. please see the pic.. Could this indicate any disease ? If yes then how can i treat it ?