red-crowned/japanese crane courtship behavior

asia ballet behavior bird birds black chilly cold conspicuous court courting courtship crane cranes crowned dance display displays ecotourism endangered exhibition feather feathers flapping flock frigid frozen grandstand grus immortality japan japanese japonensis longevity nature nobility ostentation ostentatiousness plumage pretentiousness protected romance season seasonal seasons show showboat snow snowy spectacle threatened travel white wild wildlife wing wings winter wintry