Bulk feed storage bins are also a necessary part of feeding equipment. The bins are located outside the house. An auger is used to move the feed from the bin into the house. Check with your contractor to see what capacity bulk-feed trucks are used so you can buy the correct size bins. It is preferable that two feed bins be used for each house or three bins for two houses. This will allow you to change feed quickly if it becomes necessary to medicate sick birds or meet feed withdrawal requirements.