Passerine, Flycatcher family. Total length 13cm. Head, back and tail are gray-brown, wings are black-brown, and chest and abdomen are gray-white and plain. Breeds from southern Siberia to northern Mongolia, northeastern China, Sakhalin Island, southern Kuril Islands, Japan, northern India, Himalayas, and western China, and winters in southern China, Southeast Asia, and India. It migrates to Japan as a summer bird (→migratory bird), and inhabits the edges of broadleaf forests and sparse forests in low mountains and flatlands from Kyushu to Hokkaido, as well as garden forests, where it feeds on insects. It builds a bowl-shaped nest like a tree knot on a horizontal branch by binding together lichen, a large amount of moss, feathers, bark, etc. with spider silk. It makes a thin "tsui" sound on the ground and chirps with a complex tone and a husky cry. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
スズメ目ヒタキ科。全長 13cm。頭,背,尾は灰褐色,翼は黒褐色,胸腹部は灰白色で地味。シベリア南部からモンゴル北部,中国東北地方,サハリン島,千島列島南部,日本,さらにインド北部,ヒマラヤ山脈,中国西部に繁殖分布し,中国南部,東南アジアおよびインドに渡って越冬する。日本には夏鳥(→渡り鳥)として渡来し,九州地方から北海道の低山および平地の広葉樹林の林縁や疎林,庭園の林などに生息し,昆虫類をとる。横枝上に地衣類と多量のセン類,羽毛,樹皮などをクモの糸で固めて,木のこぶのようなわん形の巣をつくる。「つぃー」という細い声で地鳴きをし,かぼそい鳴き声で複雑な音声のさえずりをする。
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