The Arlington Short Animation Film Festival will be held at Robbins Farm Park on Friday evening. The bluegrass band Wicked Pickers will kick off the festival at 7 p.m., and the films will be projected onto an outdoor screen starting at 8:30 p.m. The event is being organized by the Arlington Community Foundation, Arlington Center for the Arts, Friends of Robbins Farm Park, and Arlington International Film Festival. Audience members are invited to bring a picnic and blanket, and food vendors will also be at the park, which is along Eastern Avenue in Arlington Heights. The rain date for the festival is Saturday. Full story for BostonGlobe.com subscribers.