Black-throated Tit Aegithalos concinnus
Version: 2.0 — Published December 22, 2020
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Primarily edge habitats in broadleaf forest, especially oak (Quercus), also mixed forest and sometimes cedar (Cedrus) and, especially in northeastern India, pine (Pinus). In addition, found in wide variety of lightly wooded or bushy habitats, including rhododendron (Rhododendron) and bamboo. Generally at middle altitudes in subtropical and temperate zones. Breeds mostly at 1,200–2,700 m (but from 1,400-2,500 m in the west of its range). In northern Vietnam found at ca. 1,000 m; in China recorded at 75-3,960 m (but probably breeds mainly 1,500-2,500 m), and in Taiwan recorded at 1,000-3,000 m (but probably breeds 1,500-2,400 m; 11). In the western portion of its range, A. c. iredalei recorded to 3,000 m in western Himalayas and to 3,600 m in eastern Himalayas, and down to 1,200 m in Pakistan (900 m elsewhere in western Himalayas), 1,065 m in Nepal, and 400 m in Bhutan and northeastern India. In the southern portion of its range, A. c. annamensis occurs at 60-1,980 m, with breeding noted at 600 m in Annam. During dispersal (apparently to both higher and lower elevations), recorded down to 400 m in northeastern India (Arunachal Pradesh) and 900 m Myanmar, but birds usually only descend below their breeding zone in the hardest winter weather.