Hello, I am new to BYC, and also new to raising chickens.For starters, I would like to thank everyone here for all the wonderful information about everything chickens! I have an 8 week old barred rock pullet who barely eats and has been listless and sleepy since yesterday. She has also been pooping green and white poop with alittle bit of dark solid in it, but it is mostly watery. She has always been the smallest one, but now she is very skinny(I can feel her breastbone very sharply). It seems that she is at the bottom of the pecking order, and it sometimes seems that she is afraid to eat or drink when the main 3 pullets are nearby (11 week old Buff Orpingtons), because they will peck her out of the way. We have noticed her looking "sad", standing off by herself and looking lonely. She is one of a flock of 15 birds, 8 Buff Orpingtons (11 weeks), and 7 Barred Rocks (8 weeks). We have seperated her for one day and let her free range, and she perked up a little. But today she is back with the others because she was calling out like she was lonely. She is falling asleep with her beak on the ground, and moves very slowly We tried giving her her regular chick crumble mixed with yogurt and olive oil but she only takes a few tiny pecks of it or ignores it .When I am in the fence with her she will eat if I put her in front of the food, but she soon loses interest and ambles off, or falls asleep with her beak on the ground. I've been checking her crop, and it felt a little hard, and was marble sized for the past three days, but today it is soft and I had trouble finding it (it seemed empty). If anyone has any info on what she might have and what can be done, I would much appreciate your input, Thanks!