Trumpeter swan was still capable of flight due to its bulk. The adult trumpeter swan is all white in plumage. Like mute swan cygnets, the cygnets of the trumpeter swan have light grey plumage and pinkish legs, and gain their white plumage after about a year. As with a whooper swan, this species has upright posture and generally swims with a straight neck. The trumpeter swan has a large, wedge-shaped black bill that can, in some cases, be minimally lined with salmon-pink coloration around the mouth. The bill, measuring , is up to twice the length of a Canada goose's ("Branta canadensis")
Grey-winged trumpeter They are weak fliers, and will run by preference. The grey-winged trumpeter's song is a low humming, but its call, as its name suggests, is a very loud "JEEK" or honking "TZAAK". This bird is kept as a pet by Amerindians, since it is easily tamed, hunts snakes, and is a very efficient sentinel, with its unmissable alarm call. A captive grey-winged trumpeter named "Trumpy" was kept at Jersey Zoo by the author Gerald Durrell, and was noted for interacting with the people and animals of the zoo. "Trumpy" is mentioned several times in Durrell's book "Menagerie Manor". Grey-winged trumpeter