It's another year of beautiful birds for the Audubon Photography awards. The Grand Prize went to Kathrin Swoboda for her photo of a Red-winged Blackbird. The National Audubon Society is an American non-profit environmental organisation dedicated to conservation. It protects birds and their habitats throughout the Americas using science, advocacy, education and on-the-ground conservation. See all of the winners below, and if you are still craving more avian photography.