Flight of grey heron (Ardea cinerea) over the Senanayake Samudraya Lake, Gal Oya National Park, Sri Lanka, Indian subcontinent, South Asia

grey heron ardea cinerea sri lanka flight birds wildlife sunset lake indian subcontinent south asia nature landscape water reflection mountains trees horizon scenic tranquil evening migratory fauna sky outdoor environment ecology preservation conservation habitat serene natural beauty avian waterfowl wetlands biodiversity animal behavior flaming colorful clouds peaceful scene birdwatching