The avian biogeography of an Amazonian headwater: the Upper Ucayali River, Peru
The Ucayali River is a major tributary of the Amazon, but it narrows considerably toward its headwater at the base of the Andes. This region, the upper Ucayali Valley, is of biological interest for the large number of closely related birds elsewhere separated from each other by major rivers that com...
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Veröffentlicht in: | The Wilson journal of ornithology 2014-06, Vol.126 (2), p.179-191 |
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Sprache: | eng |
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