When I think of songbirds the Common Grackle is not a bird that comes to mind. However, the Common Grackle is listed as a songbird of the American blackbird family.
I tend to see the Common Grackle as a common bully. They seem to travel in groups and are nervous, like a Blue Jay, and when they arrive at the feeder, for example, they take over and chase the other birds off.
However, all that being said, and even though they don't have bright colors, they are a handsome bird. Especially, when the sunlight reflects off their blueish heads.
This dude here was apparently letting the other Grackles, hiding in the trees nearby, know that the cost was clear. They soon followed and there were about a dozen wrestling for time at the feeder.