About Horornis diphone canturians (Swinhoe, 1860)
The Japanese bush warbler (scientific name: Horornis diphone canturians (Swinhoe, 1860)) has an olive brown upper body, and darker dusky coloring on its underparts. It has pale eyebrows, and an upward-curving beak that gives it the appearance of smiling. This species typically reaches 15.5 centimetres (6.1 inches) in total length. It is a common year-round resident across most of Japan excluding Hokkaidō, as well as the northern Philippines. During the summer, it can also be found in Hokkaidō, Manchuria, Korea, and central China. During the winter, it can additionally be found in southern China and Taiwan. It was introduced to Oahu between 1929 and 1941, and has since spread across all the main Hawaiian Islands. In summer, it ranges from low hills up to high mountains, where it prefers to live in bamboo thickets and among black pine trees. In winter, it seeks out covered habitat at lower elevations.
