Chestnut-sided Warbler Chestnut-sided Warbler, Central Park, New York City, NY, August 31, 2024Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x teleconverter; 700 mm; ISO-51,200; f/10; 1/800 sec. This page is for the Chestnut-sided Warbler (Setophaga pensylvanica).