Browsing by Author "Dickerman, Robert William, 1926-"
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Item An annotated list of the birds of Cerro Urutaní on the border of Estado Bolívar, Venezuela, and Territorio Roraima, Brazil. American Museum novitates ; no. 2732(New York, N.Y. : American Museum of Natural History, 1982) Dickerman, Robert William, 1926-; Phelps, William Henry."The avifauna of the subtropicakl forests on the summit of Cerro Urutaní, a previously uncollected isolated tableland or 'tepui' of 1280 m. elevation on the Venezuelan-Brazilian border, is reported. A total of 82 species was collected in March and April 1977 during a fieldtrip sponsored by the Colección Ornitológica Phelps of Caracas, Venezuela, and joined by the American Museum of Natural History. Cerro Urutaní is near the middle of the east-west trending Sierra Pacaraima. This collection permitted the first analysis of the role of the Sierra Pacaraima as an avenue of dispersal between the tepuis of the Gran Sabana on the east and the more isolated tepuis of Territorio Amazonas on the western side of the region. Geographic variation is analyzed for several Pantepui species (as defined by Mayr and Phelps, 1967) with several populations needing further study noted. Forty-four (51%) of the 82 species collected represent Pantepui species, although Cerro Urutaní is a relatively low tepui"--P. [1].Item Review of red-winged blackbirds (Agelaius phoeniceus) of eastern, west-central, and southern Mexico and Central America. American Museum novitates ; no. 2538(New York, N.Y. : American Museum of Natural History, 1974) Dickerman, Robert William, 1926-"The red-winged blackbird (Agelaius phoeniceus (Linnaeus)) populations of Mexico and Central America (except those of northwest Mexico) in which the females have striped breasts are reviewed. Three subspecies are recognized from the Pacific and southern interior regions: A.p. nayaritensis Dickey and Van Rossem, A.p. nelsoni Dickerman, and A.p. grinnelli Howell (including costaricensis Van Rossem). Four subspecies are recognized from the Gulf and Caribbean lowlands: A.p. megapotamus Oberholser, A.p. richmondi Nelson (including matudae Brodkorb and brevirostris Monroe), and A.p. pallidulus Van Tyne and Trautman, with A.p. arthuralleni, from interior Lago Peten Itza, Guatemala, described as new. A map showing ranges and collecting localities is included"--P. [1].Item Revision of the short-billed marsh wren (Cistothorus platensis) of Mexico and Central America. American Museum novitates ; no. 2569(New York, N.Y. : American Museum of Natural History, 1975) Dickerman, Robert William, 1926-"The short-billed marsh wrens (Cistothorus platensis (Latham)) of Mexico and Central America are reviewed. Nine subspecies, one a migrant (C.p. stellaris), are recognized from the region. Cistothorus platensis tinnulus has an extensive range in the Trans-Mexican Volcanic Belt. Other forms are more restricted in their distribution: C.p. potosinus (new), San Luis Potosí; C.p. jalapensis (new), central highlands of Veracruz; C.p. warneri (new), lowlands southern Veracruz, Tabasco, and adjacent Chiapas; C.p. elegans, highlands of Guatemala; C.p. russelli (new), British Honduras; C.p. graberi (new), Honduras; and C.p. lucidus, Costa Rica and Panama, with one record from Nicaragua. Maps showing ranges are included"--P. [1].