Regular viewers of my blog may have noticed that these photos were not taken with a Nikon D500. I am considering switching over to using the Olympus E-M1 Mark II camera and 300mm f/4 IS Pro lens for those birding outings that involve hiking more than short distances from my car. The major precipitating factors were age and weight. At age 80, my body complains at the end of long walks carrying a tripod with the D500 and 500mm f/4 lens (8.5 pounds) attached and a backpack with water bottles, another camera body and additional lenses. The Olympus 300mm lens weighs 2.8 pounds. Attached to the Olympus Micro Four Thirds camera the field of view is equivalent to that of a 600 mm lens attached to a full frame camera. Adding the Olympus 1.4x teleconverter would produce a field of view equivalent to that of an 840mm lens. I am not ready to dispose of my Nikon gear. I have only begun to use the Olympus system. I do hope I find it to be a suitable substitute on outings when using the car as a portable blind is not an option.