Trumpeter swan the park which have not mated in years. Scientists attribute the loss in the park's population to the loss of nests and nesting sites because of spring flooding caused by climate change. Trumpeter swan The trumpeter swan ("Cygnus buccinator") is a species of swan found in North America. The heaviest living bird native to North America, it is also the largest extant species of waterfowl with a wingspan that may exceed . It is the American counterpart and a close relative of the whooper swan ("Cygnus cygnus") of Eurasia, and even has been considered the same species by some authorities.
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