Unlike most platforms, ours will feed your birds – not squirrels. We have always loved platform feeding because all sizes of birds are welcome due to easy, open access to the food. However, easy access also means squirrels – and when there is a squirrel on any feeder, birds won’t come. With the Champion you get a variety of birds without the squirrels. At Duncraft’s Squirrel-Blocker platforms such as the Champion, squirrels are foiled by the two Squirrel-Blocker grids. You fill this feeder with a layer of black oil sunflower seed, so the bottom grid rests on top of the seed. The two-grids fence squirrel noses and squirrel paws and prevent them from reaching the seed. However, birds feed easily. Now our patented Squirrel-Blocker technology, first introduced in our high quality plastic platforms, is available to you in this all metal feeder—every piece is completely chew proof. Your birds will be happy and you will be happy too.