Guess we are lucky, here in the Willamette Valley in Oregon the hummers (Anna's) stay all year. So we feed all year. Just need to watch in the winter so the feeders don't freeze or change them out so they get food. We have had a hummer nest in the tree outside our computer room on two different occasions. Haven't seen it this year, but what a thrill. I just wish we had more and 2 or three coming around at once. That must be a real thrill.