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")
Silver-throated bushtit "Mecistura glaucogularis". He specified the type locality as Shanghai. As Gould's work appeared in print in 1855 before the publication of the proceedings of the Zoological Society, under the rules of the International Code of Zoological Nomenclature Gould's publication has priority. The name "glaucogularis" combines the Latin "glaucus" "glaucous" and the New Latin "gularis" "throated". The silver-throated bushtit was formerly considered a subspecies of the long-tailed tit ("Aegithalos caudatus") but the plumage is distinctive and there are significant genetic differences. Two subspecies are recognised: Silver-throated bushtit The silver-throated bushtit or silver-throated tit ("Aegithalos glaucogularis") is a species of bird in