American bullfrog (Lithobates catesbeianus) Rouge River Bird Observatory, MI - May 2017 Nikon D500 + 500mm f/4, 1/1600 sec at f/6.3, ISO 800
American bullfrog (Lithobates catesbeianus) Rouge River Bird Observatory, MI - May 2017 Nikon D500 + 500mm f/4 and 1.7x tc, 1/2000 sec at f/6.7, ISO 4000
Southern Leopard Frog (Lithobates sphenocephalus) Ft. Pickens, Gulf Islands National Seashore - August 2012 Nikon D500 + 300mm f/2.8 and 1.7x tc, 1/320 sec at f/8, ISO 1600