Contents
Geographical Distributionand Sympatry of Tufted and Plain-mantled Tit-spinetails (leptasthenura Platensis and Leptasthenura Aegithaloides) in Argentina
Victor R. Cueto, Javier Lopez de Casenave, and Luis Marone
Distribution and Dry-season Ecology of Pfrimers Conure Pyrrhura Pfrimeri, with a Reappraisal of Brazilian Pyrrhura Leucotis
Fabio Olmos, Paulo Martuscelli, and Robson Silva e Silva
Behavior of Individuals and Social Interactions of the Red-fronted Macaw Ara Rubrogenys in the Wild During the Midday Rest
Elin Pitter and Mette Bohn Christiansen
Avifaunal Composition, Species Richness, and Status in the Tibagi River Basin, Parana State, Southern Brazil
Luiz dos Anjos, Karl-L. Schuchmann, and Ralph Berndt
Bronzed Cowbird Hosts: New Records, Trends in Host Use, and Cost of Parasitism
Spencer G. Sealy, Julio E. Sanchez, Rafael G. Campos R., and Manuel Marin
Variation in Capture Rates of Understory Birds in El Rey National Park, Northwestern Argentina
John G. Blake and Mercedes Rouges
An Overview of Field Guides to Neotropical Birds with Remarks on Their Role in the Development of Neotropical Ornithology
Francois Vuilleumier
Short Communications
Actividades Frugivoras De Tyrannus Forficatus En Un Mosaico De Vegetacion Durante La Migracion
Raul Ortiz-Pulido
Notes on the Nuptial Display of the Spotted Wood-quail (odontophorus Guttatus)
R. J. Gutierrez and K. L. Gutierrez
Traditional Use of Limestone Cave by Nesting Green Parakeets (aratinga Holochlora)
Jack Clinton Eitniear, Alvaro Aragon Tapia, and Steven M. McGehee
First Record of the Speckled Mourner (laniocera Rufescens) for the Peten Department of Guatemala
Nathaniel E. Seavy, David E. Whitacre, and Marcial Cordova A.
Coeligena Violifer Albicaudata (aves, Trochilidae): A New Hummingbird Subspecies from the Southern Peruvian Andes
Karl-L. Schuchmann and Thomas Zuchner
Short Communications
Actividades Frugivoras De Tyrannus Forficatus En Un Mosaico De Vegetacion Durante La Migracion
Raul Ortiz-Pulido
Notes on the Nuptial Display of the Spotted Wood-quail (odontophorus Guttatus)
R. J. Gutierrez and K. L. Gutierrez
Traditional Use of Limestone Cave by Nesting Green Parakeets (aratinga Holochlora)
Jack Clinton Eitniear, Alvaro Aragon Tapia, and Steven M. McGehee
First Record of the Speckled Mourner (laniocera Rufescens) for the Peten Department of Guatemala
Nathaniel E. Seavy, David E. Whitacre, and Marcial Cordova A.
Coeligena Violifer Albicaudata (aves, Trochilidae): A New Hummingbird Subspecies from the Southern Peruvian Andes
Karl-L. Schuchmann and Thomas Zuchner