832-367689 - Great Spotted Woodpecker (Dendrocopos major) sitting on hazel (Corylus avellana), surrounded by male catkins, Biosphaerengebiet Schwaebische Alb UNESCO Biosphere Reserve, Baden-Wuerttemberg, Germany, Europe
987-359 - Tree lungwort (Lobaria pulmonaria) growing on Hazel (Corylus avellana) Lungwort is an indicator of air pollution as it only grows in clean air. Sutherland, Scotland