You'll like the leaf adornments on this bird feeder, but greedy squirrels won't! Their weight makes the spring- loaded leaves slam shut over the six feeding ports. Squirrels can't get in through the spring-fastened top, either. Decorative and squirrel-proof. Adjustable for different sizes of squirrels. Allows six birds to feed. Large capacity holds 3.4 lbs of seed. From a nutrition and acceptance standpoint, black oil sunflower seed is your best choice. In addition, if you want to have no shell debris, you may want to use hulled sunflower seeds for this feeder.