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")
Trumpeter hornbill storage (similar to the excessive iron storage seen in the disease hemochromatosis in humans). They are very intelligent and have a life expectancy of up to 20 years. Widespread throughout its large range, the trumpeter hornbill is evaluated as least concern on the IUCN Red List of Threatened Species. Trumpeter hornbill The trumpeter hornbill ("Bycanistes bucinator") is a medium-sized hornbill, with length between , characterized by a large grey casque on the bill, smaller in females. The eyes are brown or red, with pink surrounding skin. Body mass is between . It is similar to silvery-cheeked hornbill. Distinguishing features include