. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 52 J. Haff er Bonn. zool. Beitr. Venezuela. In view of the excellent sampling of this fauna by Phelps & Phelps, Jr. (1958, 1963), these gaps are probably real rather than apparent. We may speculate that the above seven species have spread from southern Amazonia without having yet closed the last gap in southern Venezuela. Western Amazonian birds Among this large group of species we may distinguish widespread species and those that are restricted to northwes
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 52 J. Haff er Bonn. zool. Beitr. Venezuela. In view of the excellent sampling of this fauna by Phelps & Phelps, Jr. (1958, 1963), these gaps are probably real rather than apparent. We may speculate that the above seven species have spread from southern Amazonia without having yet closed the last gap in southern Venezuela. Western Amazonian birds Among this large group of species we may distinguish widespread species and those that are restricted to northwestern or southwestern Fig. 6: Distribution of upper Amazonian birds. Superimposed ranges of 77 species and subspecies (see text for list of names). Widespread upper Amazonian birds (Fig. 6). — Seventy species and seven subspecies (or groups of subspecies) are combined in this large cluster of birds. They occur in western Amazonia to the north and south of the Marañón-Solimoes River ranging for varying distances eastward into central Amazonia. Several species are restricted to the hilly lowlands near the Andes and many drop out in southeastern Colombia or in the Rio Juruá region of western Brazil. Less than half of the species reach the upper Rio Negro and the Madeira River. One species included here (the guan Penelope jacquacu) reached the Atlantic coast in Guyana. The toucan Ramphastos vitellinus pintoi which is closely allied to the upper Amazonian R. v. culminatus ranges into central Brazil (Mato Grosso and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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