Buena Vista Audubon Society and Preserve Calavera are sponsoring the 9th annual Endangered Species Day and Open House at the Buena Vista Nature Center (2202 S. Coast Hwy, Oceanside) on Saturday, May 18 from 10-2 pm.  This is a free family event with lots of activities for children of all ages – nature journals to seed “mudders” to a lagoon dip .  Learn about the Endangered Species Act, local threats, and recovering species as well as view local birds and reptiles.