Back by popular demand, Native Concordian, world-renowned naturalist, lecturer, birder, and author Peter Alden will present his new memoir, My Wild Life: Rare Birds, Close Calls, and the Adventures of an Eco-Explorer. Alden will share stories and photos from his decades of travel to over 100 countries and 7 continents. Book signing will follow. All ages are welcome. Signed copies now on sale at the Shop at Walden Pond. Parking is first-come, first served. On sunny days, Walden Pond can reach visitor capacity. Please check for temporary closures at mass.gov/parkalerts or call 978-369-3254 to see if parking is available.