The country also has many endemic species. Eighteen species, such as Japanese Yellow Bunting, Japanese Night Heron and Japanese Green Woodpecker are endemic to Japan while other 40 species are northeast Asian endemic. The main reason is the geographical background. Japanese island chain starts from Hokkaido and is ended at Yonaguni Island in the west and Iriomote Island in the south. The northern island, Hokkaido is located in the boreal temperature area while Okinawa, southernmost prefecture, is in the tropical climate, near Taiwan.
Japan is also at the edge of the neoarctic, palearctic and oriental biological region.
You may see an American Wigeon in the flock of Eurasian Wigeon at the park where Narcissus Flycatcher stops over on the migration. Most of birds in Japan are migratory. Many of ducks, geese, cranes and finches are winter migrants. On the other hand, flycatchers, robins and terns are mostly summer migrants. You need to visit this country more than two times if you would like to see most of the Japanese birds.