CHICKEN CRACK BOTTLES Use a 1/2" drill bit to drill holes in empty plastic bottles, add chicken scratch (aka: chicken crack) and watch the fun break out! Provide several bottles to the flock at once to avoid conflict & fowl penalties. Backyard Chicken Farming, Raising Backyard Chickens, Chicken Garden, Keeping Chickens, Pet Chickens, Chickens Winter, Diy Toys For Chickens, Treats For Chickens, Backyard Garden