|
Bar-tailed
Treecreeper |
Certhia
himalayana |
Possible
regional races (polytypic)
|
|
-C. h. ripponi |
|
-C. h. yunnanensis |
|
-C.
h. himalayana |
Certhia himalayana himalayana |
Please click for a larger popup |
Very
common below 6,000 feet in winter, disappearing at end of March, when
it goes up to the forest above. In winter plumage the whole of the
underparts are dark sooty, gradually changing to white as spring comes
on, not, apparently, by a moult, but by change of colour. The size
of bill varies greatly according to age: a young bird four months
old has the bill at gape 0.62 inch; one of eight months 0.8; full
grown, 1.
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