Like a bigger hummingbird

In Southwestern Ontario, this bird visited my bird feeder today. The best way I can describe it, is that it immediately reminded me of a hummingbird, only much bigger. About the size of a sparrow, but thinner. It was black and white with a kind of striped pattern. And of course, it had a fairly long pointed beak. Also, it would land on the ledge of the bird feeder, pick up a seed then fly on top and stand and hit the seed on the top, as if trying to crack it open.