I came across an active Rufous Hummingbird nest during the latter part of July, normally when the hummingbirds are done with nesting and enjoying the summer until they make their way to Mexico for the summer. During the summer the Rufous Hummingbirds can be found as far north as Alaska. No other hummingbird breeds farther north then the rufous. One way travel from their winter home Mexico to Alaska is about 6400 kilometres, not bad work for a very small but feisty 8 cm long bird.