Calling hummingbirds requires attracting them with the right food and environment. Hummingbirds are tiny birds that feed on nectar, so the key to attracting them is to provide a sugar-water solution in a feeder.
To make a sugar-water solution, mix 1 part sugar with 4 parts water in a saucepan. Bring the mixture to a boil, then remove it from heat and let it cool completely. Once the sugar-water solution is cool, fill a hummingbird feeder with it and hang it in a sunny spot.