Eurasian coot, Fulica atra, eating alga in a calm morning water when pair of male and female mallard ducks paddling in background in Seoul Yangjae Streem, South Korea

waterfowl eurasian coot fulica atra mallard ducks coot duck still water paddling pond foraging reflected forage wildlife couple birds ornithology shallow water bird animals swimming tranquil swim float passing together animal common alga water beauty in nature behaviour search pick black stream series eurasian eat algae color hungry behavior wild food australian river creek sunset