FREE. Led by volunteer State Parks docents. Observe wildlife at the park and learn about their natural habitat, as well as the history and geology of the area. Meet: parking lot at 8:15 a.m. to observe birds and wildlife found in the picnic area. Walk: 8:30 a.m., taking between 1½–3 hours. Anderson Marsh State Historic Park. 8400 CA-53, Lower Lake. andersonmarsh.org/event/72.