"the creeper (Oxyurus tupinieri) is the commonest bird in the country. Throughout the beech forests, high up and low down, in the most gloomy, wet, and impenetrable ravines, it may be met with. This little bird no doubt appears more numerous than it really is, from its habit of following with seeming curiosity any person who enters these silent woods; continually uttering a harsh twitter, it flutters from tree to tree, within a few feet of the intruder's face." Charles Darwin, Voyage of the Beagle
Darwin comes across the Thorn-tailed Rayadito (Aphrastura spinicauda) in the dense forests of Tierra del Fuego. This is an ovenbird (Furnariidae) that forages for insects along trunks much like a woodpecker.
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