When mine are out of the coop/run they free range in a fairly small area (I have 3 dogs who would love to eat their poop or the chicks!) so I just use a kitty litter scoop and pick up the poop with that.
I put mine in 5-10 gallon buckets, about 1/8 the way up, fill them with water and let them sit for a few weeks. I then sell those buckets to the local farmers as fertalizers. Some buy straight poo to do it themselves.
Be sure to let it cook in a compost pile long enough, or... steep in the tea er... bucket long enough. and even then don't put it directly onto plants. Chicken poo is very high in nitrogen and will burn most plants if not aged properly.