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Map o f th e w e s te rn Yungas fo re s t, d p to. La Paz, in M a didi N a tio n a l P ark s h o w in g th e lo c a tio n o f T o ko a q u e and F o rte c illo .
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... Originally, the species was probably restricted to arid, semi-open intermontane scrub 4 . In 2001, the first record for Bolivia was made in humid Yungas at Tokoaque, Madidi National Park, but being from a new habitat type it was deemed unconfirmed 3 . The second was in dry scrub <1 km west of Santa Cruz de Valle Ameno, where one was seen collecting nesting material on 12 December 2003 (ABH). ...
... These were the only known Bolivian records until now. A published sighting in dry forest along the río Machariapo in Madidi National Park 7 was later retracted by the observer (T. A. Parker) 3 . ...
The Green-capped Tanager Tangara meyerseschauenseei was known until recently only to occur in three sites in southern Peru. Recent field studies in the Apolo area, Department of La Paz, discovered a population in Bolivia. We present 10 observations in a wide area in different habitats, including two in humid cloud forest (Yungas), a habitat that was not known for the species previously. Given the confirmed population in Bolivia, and the addition of another habitat type, its threatened level should change from Vulnerable to Near threatened in the IUCN Red List. In this article we present an update of the area of occurrence of the species in Bolivia based on resent field visit in the Apolo area in La Paz, Bolivia.
... Data collection in Bolivia has been intensive in the Madidi Region (Remsen and Traylor 1989, Hennessey and Gomez 2003, and we now know that boliviana is a reproductively isolated population. Given the extreme range disjunction between the two allopatric taxa, it is likely to retain its genetic and phenotypic integrity. ...
The Swallow-tailed Cotinga (Phibalura flavirostris) has traditionally been considered to consist of two subspecies, P. f. flavirostris of southeastern Brazil's foothill forest and, isolated by 2,500 km, a population of P. f. boliviana in central-western Bolivia. The plumage of the two taxa is distinctly different; boliviana males have a longer tail, and body plumage is significantly less sexually dimorphic. The iris of boliviana is mustard yellow, distinct from the blood red iris of flavirostris. P. f. boliviana has dull to bright orange-yellow feet whereas flavirostris has pink feet. Only one vocalization type is recorded for P. f. flavirostris, whereas at least five calls and a song are known for P. f. boliviana, which vocalizes significantly more often. The Brazilian P. f. flavirostris has strong seasonal movements, whereas P. f. boliviana has no seasonal movements. Given the diagnosable differences between the two taxa, it is highly probable they are separate lineages. P. boliviana qualifies as critically endangered for its declining small population due to continual habitat loss.
... El registro de 917 especies de aves confirmadas y 1138 esperadas (Remsen y Parker, 1995), así lo indican; no obstante, gran parte del área nunca fue visitado por biólogos (CARE/ WCS/IE/SERNAP, 2003). Por otra parte, el oeste de Bolivia en estos últimos años ha proveído una serie de extensiones de rango para especies de vertebrados amenazados o raros (Tarifa et al., 2001;Hennessey, 2002a;Gottdenker et al., 2003;Martínez, 2008;, nuevos registros bolivianos (Hennessey & Gómez, 2003;Ríos et al., 2004;Maillard et al., 2007;Martínez, 2008;; así como especies de vertebrados potencialmente nuevas para la ciencia (Wallace & Painter, 1999;Hennessey 2002b, Herzog et al., 2008. En este reporte damos cuenta de dos nuevos registros de extensión de rango de distribución del mono "lucachi" (Callicebus aureipalatii), considerados los más extremos en bosques de tierras bajas al noroeste de Bolivia. ...
... El registro de 917 especies de aves confirmadas y 1138 esperadas (Remsen y Parker, 1995), así lo indican; no obstante, gran parte del área nunca fue visitado por biólogos (CARE/ WCS/IE/SERNAP, 2003). Por otra parte, el oeste de Bolivia en estos últimos años ha proveído una serie de extensiones de rango para especies de vertebrados amenazados o raros (Tarifa et al., 2001;Hennessey, 2002a;Gottdenker et al., 2003;Martínez, 2008;, nuevos registros bolivianos (Hennessey & Gómez, 2003;Ríos et al., 2004;Maillard et al., 2007;Martínez, 2008;; así como especies de vertebrados potencialmente nuevas para la ciencia (Wallace & Painter, 1999;Hennessey 2002b, Herzog et al., 2008. En este reporte damos cuenta de dos nuevos registros de extensión de rango de distribución del mono "lucachi" (Callicebus aureipalatii), considerados los más extremos en bosques de tierras bajas al noroeste de Bolivia. ...
... Intense study in the cordilleras near these cities may have led to recording more endemic species there than elsewhere. Conversely, the Cordillera de Apolobamba, another area that supports large numbers of endemic species, has only recently been the subject of bird surveys (Vogel et al. 2001, Vogel 2002, Hennessey and Gómez 2003). The paucity of locality data here suggests that the distribution models are working as they were intended—serving as proxies for more intensive survey effort. ...
Seeking more precise knowledge of avian endemism on the east slope of the Andes in Peru and Bolivia, one of the most diverse faunal regions on Earth, we used distribution models based on locality records and 10–12 uncorrelated environmental variables to map the distributions of 115 species. Both maximum-entropy and deductive models reveal three areas of endemism, broadly supporting previous assessments of endemism in the region but showing much more detail. Regions such as the southwestern Cordillera de Vilcabamba and the Río Mapacho-Yavero valley in Cusco, Peru, and the Cordillera de Apolobamba in western Bolivia support a greater richness of endemic species than has been recognized, a result likely attributable to the ability of predictive models to partially control for biases in survey effort. National-level protected areas cover ≥1,000 km2 of the ranges, or four-fifths of the ranges of species with distributions <1,000 km2, of 77% of the endemic species. However, an analysis of summed irreplaceability, which emphasizes the locations of the most narrowly distributed endemics, showed that only 18% of these critical areas are currently protected. The fine-scale maps of endemic areas are suitable for regional and local-scale conservation planning, activities that can fill current gaps in protection of many species.
... Our knowledge about the distribution of Bolivian birds has improved considerably over the past 10-15 years, especially with respect to montane forests on the east Andean slope in the Yungas ecoregion (Hennessey et al., 2003b; Herzog et al., 2008). Much recent field research has been carried out in or adjacent to protected areas (e.g., Perry et al., 1997; Hennessey & Gomez, 2003; Hennessey et al., 2003a; Herzog et al., 2005) and to a lesser degree in biogeographically interesting but unprotected localities (e.g., Herzog et al., 1999; MacLeod et al., 2005). Nonetheless, considerable gaps remain in the distribution of bird inventory sites across the Bolivian Yungas, hampering biodiversity research and informed conservation planning. ...
Cordillera Mosetenes in the lower Yungas of depto. Cochabamba represents one of the largest ornithological knowledge gaps in the Bolivian Andes. Here I report on the first ornithological expedition to this mountain range and present data on the diversity, composition, and conservation importance of the forest bird community at Laguna Carachupa (1180-1600 m altitude) on central Cordillera Mosetenes obtained in August-September 2003 using a standardized, semi-quantitative survey method. Results are compared to those from two other Yungas localities at very similar altitudes surveyed with the same method and in the same season (mid to late dry season). I recorded a total of 183 terrestrial species at Laguna Carachupa, including nine restricted-range species, four of which are Bolivian near endemics, one ‘vulnerable’, two ‘near threatened’, and 24 habitat indicator species for Upper Tropical Montane Evergreen Forest (UTMEF). Both ‘near threatened’ species were considered ‘vulnerable’ until recently. Data obtained during this study contributed to the status change, and Cordillera Mosetenes appears to be their stronghold, underlining its conservation importance. Estimated total species richness at Laguna Carachupa (about 200 species) was very similar to that of Cerro Asunta Pata in depto. La Paz and considerably greater than on Serranía de Callejas in western Parque Nacional Carrasco (about 145 species). These differences appear to be related to variations in habitat characteristics and precipitation levels. Similarity in community composition was greatest between Laguna Carachupa and Serranía de Callejas (69 %) and lowest between the latter and Cerro Asunta Pata (52 %). The proportion of exclusively Andean species and indicator species for UTMEF showed a pronounced latitudinal increase from Cerro Asunta Pata southward to Serranía de Callejas. This high degree of geographic species turnover suggests that the conservation of Bolivian Yungas bird diversity requires several interconnected protected areas along the east Andean slope.
... Bird surveys across the landscape have increased the number of confirmed bird species for Madidi from the 755 in 1999 to 905 bird species (Hennessey 2007). Several new records and/or rediscoveries for Bolivia and the park have also been documented for mammals and birds (Hennessey, 1999;Wallace & Painter, 1999;Tarifa et al., 2001;Hennessey, 2002;Hennessey & Gómez, 2002;Rios-Uzeda et al., 2004;Felton et al., 2006). ...
... Cochabamba, between 2 August and 19 September 5 , and the other to Tokoaque (14 o 37'S 68 o 57'W), Madidi National Park, dpto. La Paz, on 31 October-14 November 3 . Observations were made at distances of 2-20 m, by six different observers, and sound recordings were made, using a Sony TCM-5000 tape-recorder and Sennheiser ME66 directional microphone, at río Pampa Grande. ...
Records of the Scimitar-winged Piha Lipaugus uropygialis, a globally threatened and restricted-range species, exist for only a very limited number of localities in the Bolivian and Peruvian Upper Yungas Endemic Bird Area EBA 055 1,8,10. This paucity of knowledge regarding the distribution and habits of L. uropygialis raises concerns for the conservation of the species, as habitat has been degraded in areas for which past records exist. The vocalisations of L. uropygialis were unknown and behavioural information was also sparse 7,9. From recordings and observations made in Bolivia in 2001 we describe the species' voice and behaviour, and combine this with a review of existing unpublished and published data to assess its conservation status.
Los crácidos son considerados como uno de los taxa con el mayor numero de especies amenazadas. Este reporte describe las abundancias y distribución de algunas especies en el Norte de La Paz, dentro las Áreas Protegidas de Apolobamba y Madidi.
Para esto se utilizaron los métodos de entrevistas semi-estructuradas, encuentros visuales, transectos lineales, así como observaciones casuales en la zona, llegándose a registrar un total de seis especies: Penelope jacquacu, Mitu tuberosa, Pipile cumanensis y Ortalis gutatta, Chamaepetes goudotii y Penelope montagnii. Los resultados iniciales muestran que esta comunidad presenta una distribución uniforme de la riqueza a través del gradiente altitudinal analizado. Así también, se identificó los potenciales recursos alimenticios que pueden ser utilizados por estas aves en esta región.
En las evaluaciones que se realizaron a partir de transectos lineales en cuatro localidades de la región, solo se registró a P. jacquacu, M. tuberosa, P. cumanensis y O. gutatta. De las cuatro localidades evaluadas con esta metodología solo dos presentan a las cuatro especies, donde solo M. tuberosa se encuentra registrada en todos los sitios. En general, P. jacquacu y M. tuberosa son las mas abundantes seguidas de P. cumanensis y O. gutatta. En una localidad de monitoreo constante se encontró variación anual en la abundancia de M. tuberosa a diferencia de las otras especies. También se estimo la densidad para la especie mas común en el área (P. jacquacu) con una tendencia a presentar de 8.4 a 11.2 ind./km2.
Por lo general a las especies se las observa individualmente o en grupos de 2 a 3 individuos, proporciones que varían entre localidades y sitios, a excepción de P. jacquacu. Así también, existe una preferencia de hábitat de P. jacquacu y M. tuberosa a los bosques de tierra firme no diferenciándose tendencias claras para las otras dos especies.
