Hummingbird Migration Learn more about Hummingbird Migration. The only hummingbird we have in New Hampshire is the Ruby-throated hummingbird, although a rare vagrant species turns up every once in a while. The male ruby-throated has a red throat that will appear black if it is not in the sun. The female has a whitish-gray breast and both have a greenish back. The young will resemble the female during their first year.
Hummingbirds migrate south at summer's end.
Most hummingbirds are gone from our area by mid-September, although a few hang on a bit longer. Leave your feeders up until you no longer see any hummingbirds using them. In the past it was believed that hummingbirds would not begin their fall migration south as long as feeders were still available, but studies have shown this to be incorrect. By leaving your feeders up, you will not be encouraging hummers to stay longer than they should. The gradual changing of the day length tells hummers when to migrate.