Okay. The hen has lost a lot of weight, comb has fallen over to the side now pale in colour. She wants to eat - runs out with the others and appears interested in the food but doesnt eat any. Nothing caught in her beak. Crop is very hard. I have tried oil and massage. Now it would appear that I am keeping her alive by giving her milk morning and night. She drinks a cupful at each sitting. I am thinking I need to cull her, but because she is so full of life I want to give her a chance but it is cruel to allow her to starve to death too. This has been going on for at least a fortnight. I am at a loss, any ideas.