NATURE HAPPENINGS . New Moon: May 15; Full Moon: May 29 • May 5 – 6: Eta Aquarids meteor shower caused by Halley's Comet. Best seen before dawn on 5/6 • May 12: International Migratory Bird Day • Breeding season for Peregrine Falcons • Ospreys return and begin readying their nests near water where fish are abundant. • Purple Martins return. • Evening Grosbeaks return to bird feeding stations for sunflower seed treats. • Migratory departures - Snow Geese, American Wigeon, Surf Scoter, Dunlin, Ruby-crowned Kinglet, Gold-crowned Sparrow. • Migratory arrivals - Western Tanager, Black-headed Grosbeak, Bullock’s Oriole, Vaux's Swift, flycatchers, Western Wood-Pewee, Swainson’s Thrush and Yellow Warbler. • Black Cottonwoods shed their cottony seeds on breezy days. • Western Tiger Swallowtail butterflies visit flowers. • Turquoise-colored male Lazuli Buntings sing while rich brown females incubate eggs.