South Padre Island Birding & Nature Center, 6801 Padre Blvd, SPI. For information call (956) 761-6801. Music kicks off with Leslie Blasing signing at 10:00am. Arts & Crafts, Sand Castle Building, Face Painting, Vendors, Native Plant Sale to attract the Monarchs to your gardens. Special Presentation on Growing Butterfly Plants by our Senior Naturalist, Javi Gonzalez at 11:30 am. Costume Contest at 1:00 pm.