Canada Geese have a black head and neck with white 'chinstrap'. There are seven subspecies of this bird, of varying sizes and plumage details, but all are recognizable as Canada Geese. The similar Cackling Goose was split from this species; they are smaller and have different proportions than Canada Geese.
Like most geese, the Canada Goose is migratory with the wintering range being most of the United States.
Canada Geese have reached western Europe naturally, as has been proved by ringing recoveries. They are also found naturally on the Kamchatka Peninsula in eastern Siberia, eastern China, and throughout Japan.
Conservation
The Canada Goose is listed as Least Concern on the IUCN Red List and was last assessed in 2012 by BirdLife International. This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
シジュウカラガン (Shijuukara-gan)