I currently have 2 smallish gravity feeders set up for my 10 quail. I love it. I only have to fill them every other day. I had been feeding a high protein chicken starter that was small crumbles. I just switched my birds to a quail layer feed as it had a better ratio of calcium. However, it is a fine mill and seems to be having difficulty flowing out of the gravity feeder. I have to occasionally shake the feeder to fill the bottom trough when my birds empty it. Defeats the purpose of a gravity feeder. I am wondering if I should mix it with their oyster shells or half and half with the old feed to make it more likely to 'fall' without caking. I don't want to invest in more feeders or waste the bag of food I purchased. I am a nurse and work long shifts and would hate for my birds to go hungry when I'm not around to manually dispense their food. Anyone have suggestions?