OBSERVACIONES SOBRE UN NIDO DE HUED‐HUED CASTAÑO (PTEROPTOCHOS CASTANEUS, RHINOCRYPTIDAE): COMPORTAMIENTO PARENTAL E INTENTOS DE DEPREDACIÓN

RESUMEN ∙  El Hued‐hued Castaño (Pteroptochus castaneus) es una especie poco estudiada, endémica de Chile y Argentina. En este trabajo describimos observaciones realizadas durante ocho días sobre un nido con dos pichones de Hued‐hued Castaño en septiembre y octubre de 2015. El nido estaba ubicado en el borde de un camino, a 1 km de la Reserva Nacional Los Queules, Chile central. En base a registros obtenidos de cámara trampa, ambos individuos con‐ tribuyeron a la alimentación de pichones y limpieza del nido. Las visitas con ingreso de alimentos constituyeron solo el 50% de las visitas totales al nido. La tasa de alimentación (0,90 ± 0,15 ingresos/h) fue baja comparada con otras especies de la familia. Registramos un total de cuatro intentos de depredación, de los cuales tres no tuvieron éxito durante nuestra observación: dos intentos por güiña (Leopardus guigna) durante la noche y un intento por Aguilucho (Geranoaetus polyosoma) durante el día; y un intento que pudo haber sido exitoso: intento de depredación por parte de güiña durante la noche que resultó en la desaparición de un pichón, ya que la tasa de alimentación se redujo a la mitad luego del mismo.ABSTRACT ∙ Observations at a Chestnut‐throated Huet‐huet (Pteroptochos castaneus, Rhinocryptidae) nest: parental behavior and predation attempts The Chestnut‐throated Huet‐huet (Pteroptochus castaneus) is a poorly known species, endemic to Chile and Argentina. Here we describe observations made during eight days on a nest with two nestlings of the Chestnut‐ throated Huet‐huet between September and October of 2015. The nest was in a tunnel located in a road bank, 1 km from Los Queules National Reserve, central Chile. Based on recordings from a camera trap, both members of the pair contributed to feeding of nestlings and nest sanitation. Visits bringing food constituted only 50% of the total visits to the nest. Feeding rate (0.90 ± 0.15 trips/h) was low compared to other species of the family. We recorded a total of four predation attempts, in which three were unsuccessful during our observation: two attempts by a kod‐kod (Leopardus guigna) during the night and one by a Variable Hawk (Geranoaetus polyosoma); and one attempt that might have been successful: attempt by kod‐kod during the night resulting in the disappearance of one nestling since the feeding rate halved afterwards.

Observations at a Chestnut-throated Huet-huet (Pteroptochos castaneus, Rhinocryptidae) nest: parental behavior and predation attempts

The Chestnut-throated Huet-huet (Pteroptochus castaneus) is a poorly known species, endemic to Chile and Argentina. Here we describe observations made during eight days on a nest with two nestlings of the Chestnut-throated Huet-huet between September and October of 2015. The nest was in a tunnel located in a road bank, 1 km from Los Queules National Reserve, central Chile. Based on recordings from a camera trap, both members of the pair contributed to feeding of nestlings and nest sanitation. Visits bringing food constituted only 50% of the total visits to the nest. Feeding rate (0.90 +/- 0.15 trips/h) was low compared to other species of the family. We recorded a total of four predation attempts, in which three were unsuccessful during our observation: two attempts by a kod-kod (Leopardus guigna) during the night and one by a Variable Hawk (Geranoaetus polyosoma); and one attempt that might have been successful: attempt by kod-kod during the night resulting in the disappearance of one nestling since the feeding rate halved afterwards

Observations at a chestnut-throated huet-huet (Pteroptochos castaneus, rhinocryptidae) nest: Parental behavior and predation attempts Observaciones sobre un nido de hued?hued castaÑo (pteroptochos castaneus, rhinocryptidae): Comportamiento parental e inte

© The Neotropical Ornithological Society. The Chestnut-throated Huet-huet (Pteroptochus castaneus) is a poorly known species, endemic to Chile and Argentina. Here we describe observations made during eight days on a nest with two nestlings of the Chestnut-throated Huet-huet between September and October of 2015. The nest was in a tunnel located in a road bank, 1 km from Los Queules National Reserve, central Chile. Based on recordings from a camera trap, both members of the pair contributed to feeding of nestlings and nest sanitation. Visits bringing food constituted only 50% of the total visits to the nest. Feeding rate (0.90 ± 0.15 trips/h) was low compared to other species of the family. We recorded a total of four predation attempts, in which three were unsuccessful during our observation: two attempts by a kod-kod (Leopardus guigna) during the night and one by a Variable Hawk (Geranoaetus polyosoma); and one attempt that might have been successful: attempt by kod-kod during the ni

A new flower fly species of Cepa Thompson & Vockeroth (Diptera: Syrphidae) from the Valdivian evergreen forest hotspot, Chile

Barahona-Segovia, Rodrigo M., Barceló, Matías (2019): A new flower fly species of Cepa Thompson & Vockeroth (Diptera: Syrphidae) from the Valdivian evergreen forest hotspot, Chile. Zootaxa 4612 (3): 431-439, DOI: 10.11646/zootaxa.4612.3.

Rattus rattus, a potential threat to the endangered treeGomortega keulein the Maulino forest of Chile

Gomortega keuleis an endangered tree species, the single extant species of a monotypic family. It is safeguarded only in one protected area. Its recruitment and germination are low, possibly in part because rodents prey on the seeds. However, it remains unknown if any rodent preys upon its large fruit and if so, to what extent. In this work we aimed to evaluate the interaction and possible predation of the invasive speciesRattus rattusonG. keule. We recorded with camera traps the visits and behaviour of different animal species with the fruit ofG. keule. We obtained a total of 90 records. The only animal species that interacted with the fruit during the 14-day observation period wasR. rattus, eating and carrying away the fruit. This could constitute an additional threat toG. keule. Despite the evidence of seeds chewed by rodents, it would be useful to document the fates of seeds to confirm our conclusions and understand this interaction. However, in the meantime we recommend increasing propagation and protection of seedlings, and also taking actions againstR. rattusin the only protected area where this endangered tree is present.Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) CONICYT FONDECYT 1140657 CONICYT-PCHA, Magister Nacional 2015-2215144

Myopa nebulosa sp. nov. and Myopa bozinovici sp. nov. (Diptera: Conopidae): New thick-headed flies from a threatened biodiversity hotspot in central Chile

Barahona-Segovia, Rodrigo M., Barceló, Matías (2020): Myopa nebulosa sp. nov. and Myopa bozinovici sp. nov. (Diptera: Conopidae): New thick-headed flies from a threatened biodiversity hotspot in central Chile. Zootaxa 4780 (2): 291-306, DOI: 10.11646/zootaxa.4780.2.

Rewilding clearcuts: shrub vegetation as a facilitator of movement of a forest specialist

Replacement of native forests by exotic monoculture plantations is the principal driver of land change in central Chile; it reduces the richness and abundance of native mammals. The presence of shrub vegetation in mature pine plantation enhances habitat quality for small mammals. However, the role of structural complexity of shrub vegetation in young pine plantations after clearcutting remains unknown. Since plantations are managed by clearcutting, young pine plantations act as a barrier to movement of forest species. We tested if shrub vegetation contributes to rewilding harvested areas, assessing the movements of the long-haired field mouse (Abrothrix longipilis), a forest rodent, from native forest or mature pine plantations into young pine plantations. We evaluated habitat use at the edge of contrasting habitats, young pine plantations, and native forest or mature pine plantations. Habitat use was higher in young plantations that have shrub vegetation than those that have no shrubs. The long-haired field mouse is willing to use young plantations when shrub vegetation is developed.Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 1140657 CONICYT-PCHA, Magister Nacional 2015-2215144