Daily. Even with only 2 birds, if I miss just one poop, inevitably I end up stepping in it (Murphy's Law is alive and well) and tracking it all over creation, including through the house. So I try to get every poop every day. Just easier for me than cleaning up poop that is tracked all over. While I may have only 2 birds, together they poop a bazillion times a day.. Can't even imagine how much poop for bunches of chickens..... Also, with all the disgusting humidity and moisture around especially in the summer, I figure that's less festering stuff for the birdies feet to come into contact with, and maybe I am reducing risk of truly unpleasant things like bumblefoot. JJ