SpicyPup went through a stage of being obsessed with rabbit poo but it did pass on its own. I would maybe give it a bit of time to see if it gets old naturally before trying to train. He's still at an age where he will be drawn to investigating new things.
Mine loves to eat guinea pig droppings. She's never touched the chicken poo - that seems a bit more yuck! She used to eat horse droppings when she was little. She'd carry a little ball of it around for a while and then eat it. Made my dc4 feel rather queasy!
I picked up our rescue pup last saturday and he really is a delightful little chap. He is 6 months old and a terrier cross of some variety. He is very bright and has already learnt not to chase my chickens. However, he loves eating their droppings, and will spend ages truffling around the garden finding them if I let him. The chooks are free-range and I don't want to fence them in.
So, is this something he will grow out of or should I try and train him not too?