On Wednesday, May 31, The Sunriver Nature Center will be hosting a presentation on the Biology of Sandhill Cranes. Come to the Nature Center's Pozzi Educational Center at 6 pm to hear a presentation by Gary Ivey of the Trumpeter Swan Society. The cost is $10 for non members, $8 for members and free for SROA members who register by May 2nd. Register online by going to:www.sunrivernaturecenter.com