Either of two families of songbirds of the N hemisphere: the treecreeper (US creeper) (Family: Certhiidae, 6 species); and the Australian treecreeper (Family: Climacteridae, 6 species), native to Australia and New Guinea; inhabits woodland; eats insects caught on trees and (Australian treecreepers) on ground.
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Certhia familiaris Following recent studies of cytochrome b mtDNA sequence and song structure (Tietze et al., 2006), the following species are recognized: Common Treecreeper or Eurasian Treecreeper, Certhia familiaris Hodgson's Treecreeper, Certhia hodgsoni Brown Creeper, Certhia americana Short-toed Treecreeper, Certhia brachydactyla Himalayan Treecreeper or Bar-tailed Treecreeper, Certhia himalayana Sichuan Treecreeper, Certhia tianquanensis Nepal Treecreeper or Rusty-flanked Treecreeper, Certhia nipalensis Sikkim Treecreeper or Brown-throated Treecreeper, Certhia discolor Manipur Treecreeper, Certhia manipurensisThey form two evolutionary lineages: the former four species represent a Holarctic radiation, whereas the remaining five are distributed in the area south and east of the Himalaya. |
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