Bowie Nature Park's homeschool program "Leaves, Limbs and Twigs" is full for its October 7 session, according to the park's October newsletter. The program, set for 10 to 11:30 a.m. at Joann's Outdoor Classroom, has park naturalists helping students identify types of trees, learn about their growth cycles and see how trees support local ecosystems, followed by a 45-minute tree identification hike.