The Sichuan treecreeper (Certhia tianquanensis) is a rare species of bird in the treecreeper family, Certhiidae.
It was described as new to science (initially as a subspecies of the common treecreeper C. familiaris) in 1995 from 14 specimens taken at four sites in the mountains of western Sichuan, China. In 2002, it was realized that these birds constituted a distinct species, and subsequent research suggests it is closest to the Nepal treecreeper (C. nipalensis).
This bird is relatively large with a long tail. Its bill is strikingly short while the throat is whitish and darker underparts.
Sichuan treecreeper sings aloud with a rapid and high-pitched trill.
This species is believed to be a relict species breeding in open old-growth stands of the conifer Faber's fir (Abies fabri) at high altitude (2,500–2,830 m or 8,200–9,280 ft), although it is thought to undertake localized altitudinal migrations in the winter (occurring down to at least 1,600 m or 5,200 ft).
It is known from five sit...
Source: Wikipedia
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