swan

stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult

to declare or affirm solemnly and formally as true; "Before God I swear I am innocent"

move about aimlessly or without any destination, often in search of food or employment; "The gypsies roamed the woods"; "roving vagabonds"; "the wandering Jew"; "The cattle roam across the prairie"; "the laborers drift from one town to the next"; "They rolled from town to town"

sweep majestically; "Airplanes were swanning over the mountains"