Hummingbird Feeder
Hummingbird feeders are usually red. People often use nectar with red dye but this does not help the hummingbird feeder attract the hummingbirds and surely doesn't help the quality of their diet. I hung my hummingbird feeder from a post with a wire. I can coat the wire with sticky goop that catches the ants should they find it. That way I don't add to my ant problems. Since hummingbirds are very territorial using several hummingbird feeders spaced around the yard helps to separate the birds and you will get more birds in your yard. Keeping space around the hummingbird feeder so the hummingbirds can see that no predators are about also improves their confidence.
Hummingbird feeders should be the size that can feed the birds that come to it in 2-3 days. Extra food left in your hummingbird feeder can get mold and sicken your birds.Hummingbird food should be replaced frequently and the feeders washed. The shallow feeders are easy to clean. If you have a bunch of feeders up even feeders that are not red will get used
If you have hummingbird feeders you may find that Orioles are interested too. Particularly if you put the feeder in a sunny location. Make sure at least one of your feeders has a standing bar since the Orioles don't hover while they feed.