Angelenos will celebrate Southern California birds and LA’s biodiversity at the fourth annual Bird LA Day, an initiative of Audubon California. More than 50 nature and bird themed events will take place around the greater Los Angeles area, as far north as Castaic Lake and as far south as Long Beach. Audubon conceived of Bird LA Day as a way to remind the world that Los Angeles, with more than 500 different bird species spotted here, is not a concrete jungle but rather a home to one of the most diverse ecosystems in the world.