View this nightly aerial spring spectacle as the birds come back to Bend to roost The Vaux's (rhymes with foxes) swift is a 4½-inch long, fast-moving bird (it's a swift after all) that resembles "a cigar with wings." The smallest of all North American swifts, these aerial acrobats put on a nightly show during their annual migrations through downtown Bend. From their winter range which is the tropics of Mexico south to Venezuela, these 4-ounce birds undertake a Herculean migration flying to their breeding grounds in the Northwest (central California to southeast Alaska). Bendites and visitors may bear witness to this passage and enjoy watching these whirlwinds of wings as they circle round a downtown chimney atop the Boys & Girls Club at 500 NW Wall Street before descending in a controlled chaos into the darkness below.