birds cranes flight fly Grus grus Hula Valley Israel migrating migration natural nature silhouette beach coast coastal creation environment environmental feeding flock flying gaggle gander gathering geese goose migrate ocean ornithology plumage preserve sanctuary sea seaside snow geese snow goose white wild wildlife beak bird birdwatching canada canadian duck feather habitat honk marsh marshland nest nesting north northern outdoor outside park pond quack scene communication couple egg greet hello kiss love lovebird mate pair crocodile cross crossing Kenya mara mara river Masai Mara Serengeti Wildebeest elephants crocs arctic seabirds tern terns animal aquatic avian blue breed closeup color day domestic domesticated farm farming fauna fowl lake livestock neck one orange poultry side snow swimming view water wing