What color is it? Here is a website for you to compare your poop with the poop in these pictures.
I am having the same problem but I narrowed it down to my LF Roo. He was acting sick. Not crowing, breeding and standing around hunched so I wormed my flock with valbazen. He feels better but still has icky poop. I wormed them on the 22nd an plan to reworm on the 2nd. Here is. Pic of his poop.
Sorry to butt into your thread, they just were such similar problems.
Definetly not normal... Could be coccidiosis, a bacterial infection or both. How old is he?