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Bill black and thinner than most congeners. In north undertail coverts and tail sides white while in central and southern Chile and Argentina, the nearest part of the tail sides are dark. Eye is pale in northern birds but may be dark in birds from southern Bolivia and south of there.
Vagrant to the Falkland Islands.
The scientific name has been spelled montana in the past.
There are 5 subspecies:
High-altitude shrubland, high-altitude grassland, and pastureland; can be seen at heights around 3,500m
Likes to perch on wires, buildings in villages, and rocks, but rarely on bushes.
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