Greylag Goose White Morph Taken at Strathclyde Park on 4th January 2022 using Nikon D500 with Sigma 600 mm zoom lens. Taken at Strathclyde Park on 3rd December 2020 using Nikon D500 with Sigma 600 mm zoom lens. Taken at Strathclyde Park on 1st October 2020 using Nikon D500 with Sigma 600 mm zoom lens. See Wikipedia