丹顶鹤向伴侣鞠躬，北海道，日本

animal swan outdoor bird goose water bird water group duck aquatic bird penguin sky line flock waterfowl lake colored flightless bird bunch greater flamingo flamingo several grass standing drinking pond gathered gruidae colorful swimming puffin black beak atlantic puffin orange adaalie penguin king penguin emperor penguin seabird mammal winter dog wildlife owl horse bear nature wave day