Post mount bluebird feeder. Bluebirds soon learn to reach inside this feeder for the meal worms and treats you provide. Designed for easy three-step training. First, leave the lid open and remove Plexiglas side. Second, insert Plexiglas side and at last, close the lid so only bluebirds can use the feeder. Mount on a post or tree. There is one pre-drilled hole in the top of the feeder for tree mount. Any other mount option will have to be added or altered by the customer. Hardware not included.