Walk down the bird food aisle and you will face dozens of bags promising to attract every bird imaginable. The truth is simpler: a few types of seed do almost all the work. Here is what actually pulls birds in, and what to skip.

Black oil sunflower: the all-star If you buy only one food, make it black oil sunflower seed. Its high fat content gives birds energy, and its thin shell is easy to crack. Cardinals, chickadees, finches, nuthatches, and titmice all love it. It is the backbone of nearly every good feeding setup.

Nyjer seed for finches These tiny black seeds, often labeled thistle, are a magnet for goldfinches and house finches. Because the seed is small, you need a special mesh or tube feeder with narrow ports. The reward is bright flocks of finches, especially in summer.

Suet for woodpeckers Suet is rendered fat, often packed with seeds or insects, sold in cakes that slot into a wire cage. It is a high-energy favorite of woodpeckers, nuthatches, and chickadees, and it shines in cold weather when birds need extra calories.

White millet for ground feeders Small and round, white millet appeals to ground-feeding birds like doves, juncos, and sparrows. Scatter a little on the ground or use a low platform feeder rather than a hanging tube.

What to avoid Skip cheap mixes loaded with red milo, golden millet, and cracked corn filler. Most backyard birds toss these aside, leaving a messy pile beneath the feeder that attracts pests. Read the label and favor mixes that lead with sunflower.