Today, I saw a Bull-headed Shrike, when I was walking along the Tama river in Tokyo. Bull-headed Shrike distribuets to Japan, Korea, China, and southeast of Russia. Bull-headed Shrike is famous for sticking their food (insects, frogs, or mice) in branches of trees and leaving them. Meaning of this behavioral is still unclear. It is said that Bull-headed Shrike is saving their food for surviving winter. However, this bird often forgets the food and never eats them. It is also said that this bird has a habit to fix their food by sticking them to branches first, and then eats. When they are eating, they often need to fly away to escape from their enemies. So, we are just seeing their left over, and thus there is no meaning. This bird is very common in Japan (although I saw it for my first time), but we still do not understand their behavior completely. It is interesting to examine, I think. Japanese name of this bird is Mozu (百舌). "Mo (百)" spells "a hundred" in Chinese, and "Zu (舌)" spells a tongue in Chinese, indicating that this bird has a hundred of tongues. Actually, this bird can mimic songs of various (a hundred of) other birds. This is why name of this bird is Mozu in Japanese.