The hottest show in Portland in September is also free: the nightly roosting of the Vaux’s Swifts that, tornado-like, funnel into the chimney of, among other places, Chapman Elementary School in NW Portland. The night’s silver screen might also feature a protagonist hawk waiting to catch his prey, that is if a swarm of swifts doesn’t circle back en masse to chase the hawk away amid whooping cheers from the audience. Read more about them on the Audubon Society of Portland’s website. Think Audubon should print this as a t-shirt next year? If so, hit the Like button and I’ll donate the art to them.