Jewel Lake, Tilden Park Thursday, August 31, 7:30 AM - 11 AM Our traditional first field trip of fall - a short walk along Wildcat Creek and around Jewel Lake in Tilden Park. Possible highlights include fall warblers, Red-Breasted and Pygmy Nuthatch, Pacific Wren and maybe a Varied Thrush. This trip is suitable for beginners. […]