The Ruby Throated Hummingbird arrives in the middle latitudes of the United States about the first of May and departs in October. If you live in an extensively wooded area or along a river, you may see them all summer long. Generally we can expect to have them most of May and then returning in mid August until their final departure south. One thing for certain is that a Hummingbird feeder will not stop them from migrating when the time arrives. The key to attracting them is habitat, minimal or no use of pesticides, and the types of flowers in your garden. Hummingbirds can be attracted to feeders containing artificial nectar.