In the winter, I cook suet for the woodpeckers and I supply another feeder with dried mealworms for the bluebirds, chickadees and finches. Now that the summer birds are back, the winter feeders take a less prominent role near the fence and the Welch's grape jelly dish and the nectar feeder move forward. Until the weather turns cold I'll fill these non-stop for flashy Baltimore Orioles and acrobatic hummingbirds.
Of course, nature is the primary source of food and our friends at Houzz compiled this excellent list of flowers that attract hummingbirds.
So get to your favorite nursery and start digging. You'll love being a magnet for the highly entertaining backyard bird population.