What should you feed hummingbirds?
Commercial hummingbird feeders, both bottle and saucer types, are designed with red parts to attract the notice of hummingbirds. Never add red food color to sugar water, and never use commercial mixes that have red dyes. Nectar in flowers is clear, and red food coloring may be harmful for hummingbirds.
Never use honey to make hummingbird food - when honey is diluted with water, bacteria and fungus thrive in it. Table sugar is perfect. The normal mixture, especially ideal during hot or dry weather, is ¼ cup of sugar per cup of water. During cold, rainy, or foggy conditions when fresh water is plentiful but birds need more energy, it’s fine to make the mixture 1/3 cup of sugar per cup of water. Concentrations of sugars in natural nectars vary within about that range.
If you mix up small quantities of sugar water every day or two, there’s no need to boil the water. But if you mix up larger batches and refrigerate part for later use, then it’s wise to make the mixture with boiling water.
What kind of feeder is best?
The two most important issues to consider in selecting hummingbird feeders are how easy they are to take apart and clean, and how large they are. Bacteria and mold grow in sugar water, and sugar ferments, so hummingbird water should never be left out for more than two or three days, and changed daily in very hot weather. The easier it is to clean a hummingbird feeder, the more likely you are to do it often and well. The fill hole should be large enough for you to be able to get a bottlebrush inside, and every crevice should be easy to scrub. The best-sized feeders are those that are emptied every day or two by the hummingbirds you have. Hummingbirds are usually extremely territorial around feeding sites, and so four tiny feeders with one feeding port each, set in different trees or at different windows, will attract and maintain more hummingbirds than one large feeder with eight ports.
Bottle or tube hummingbird feeders can be glass or plastic, often with red plastic flowers and bee guards (little plastic screens that keep insects away from the sugar solution) on the feeding ports. If the bee guards are yellow, they may, ironically, attract bees. Plastic saucer-type hummingbird feeders have feeding ports in the top, making them fairly bee-and wasp-proof. These feeders often have little moats in the center that should be filled with regular tap water—that will keep ants from climbing down the support wire or rod and getting to the sugar water.
If hummingbird feeders have large enough perches, orioles, Downy Woodpeckers, Cape May Warblers, and other species may visit them. In some places, bears can be a problem if feeders are at all accessible.
Hummingbird bottle feeders tend to leak in the sun, because air trapped in the top of the bottle expands as it warms and pushes the nectar out. This doesn’t happen in tray feeders. Either way, you should avoid locating your hummingbird feeder in direct sun, which causes the sugar solution to spoil rapidly.