Mating ritual of male Ruddy Duck: Avian bubbling behaviour in pond

duck bird ruddy duck ritual bubbling mating ritual water drake male avian behaviour pond waterfowl bill blue wetland behavior plumage outdoor nature fowl feather beak birdwatching ornithology wild wildlife animal marsh display tail float swim aquatic copy space reflect vegetation foliage oxyura jamaicensis oxyura jamaicensis breeding habitat stifftailed courtship bubble fauna brown