Tips for a Healthy Feeding Station From Bill Thompson III at Birdwatcher's Digest magazine. The type of bird feeder you use will determine which birds come to your yard to eat.
Hummingbird feeders hold liquid and have very narrow openings.
Platform feeders are simply flat tables raised off the ground. Cardinals like these. Doves will eat from them too if they are not very far off the ground. Shorten the perches to keep larger birds away. Hopper feeders are bins that hold seeds that spill out of the bottom as the birds eat.