BoletÍn Chileno de Ornitología Volumen 16 Número 1 – 2010

Artículos

Dieta del Halcón Peregrino (Falco peregrinus) en la ría deseado, patagonia austral Argentina
Miguel Ángel Santillán, Alejandro Travaini & Javier Fernández
pp. 1-8 | PDF (52K)

Resumen

Peregrine Falcon (Falco peregrinus) diet from the Ria Deseado, Austral Argentine Patagonia
Miguel Ángel Santillán, Alejandro Travaini & Javier Fernández

rapacero@yahoo.com.ar

El halcón peregrino (Falco peregrinus) es una especie cosmopolita cuya ecología trófica es bien conocida en buena parte de su distribución. Describimos la dieta de una pareja reproductora en base a 82 presas identificadas de 32 egagrópilas y 32 restos recolectados en las cercanías del nido, durante noviembre y diciembre de 2008 (época de cría austral). El nido estaba ubicado en el Cañadón Torcido de la Ría Deseado, en la localidad de Puerto Deseado, provincia de Santa Cruz (47°45′S, 65°56′O). El halcón peregrino consumió principalmente aves (80,4%), en particular Columba livia (39%) y Passeriformes (29%). Llama la atención el bajo consumo de Charadriiformes (6%) y Ardeiformes (1%), a pesar de su disponibilidad en las pobladas colonias de aves marinas cercanas. Consumió además algunos insectos (15,8%): Cicadidae, Curculionidae y Tenebrionidae; y pequeños mamíferos (3,7%). En términos de biomasa Columba livia aportó el 75,7% del total consumido, mientras que los artrópodos y los micromamíferos aportaron solo el 0,1 y 1,1%, respectivamente. Nuestros resultados coinciden con los ya observados para la especie por otros autores, donde el elevado consumo de Columbiformes se relaciona con la cría dentro o cerca de áreas urbanizadas.



Contribuciones breves

Distribución reproductiva del Cormoran Imperial (Phalacrocorax atriceps) en Chile
Jaime Cursach, Alejandro Simeone, Ricardo Matus, Oscar Soto, Roberto Schlatter, Claudio Tobar & Jaime Ojeda
pp. 9-16 | PDF (153K)

Resumen

Breeding distribution of Imperial Cormorant (Phalacrocorax atriceps) in Chile
Jaime Cursach, Alejandro Simeone, Ricardo Matus, Oscar Soto, Roberto Schlatter, Claudio Tobar & Jaime Ojeda

jcurval@gmail.com

The Imperial Cormorant (Phalacrocorax atriceps) is a endemic seabird of Patagonia. Despite being one of the most abundant seabird species of channels and fjords of southern Chile, little is known of its breeding distribution and population. Through a review of literature and unpublished data, this work presents a list of nesting sites of the Imperial Cormorant on the Chilean coast and makes a diagnosis of their population status. Our review identified 42 colonies along the Chilean coast, from Santa Maria Island (37ºS) to the islands of Diego Ramirez (56ºS). Colony sizes range from 50 to 8,000 pairs, but the type of information collected in several cases does not allow a reliable population estimate for Chile. We recommend increasing the efforts in the development of research projects focusing on the distribution and abundance of nesting sites of this and other seabird species in southern Chile.

Consumo de semillas de roble (Nothofagus obliqua) por tricahues (Cyanoliseus patagonus) en la precordillera de curicó
Patricio Corvalán & Jaime e. Jiménez
pp. 17-20 | PDF (33K)

Resumen

Seed consumption of southern beech (Nothofagus obliqua) by Burrowing Parakeets (Cyanoliseus patagonus) in the Andean foothills of Curicó
Patricio Corvalán & Jaime e. Jiménez

jjimenez@ulagos.cl

Here we report for the fist time on the feeding behavior of Burrowing Parakeets (Cyanoliseus patagonus) on roble (Nothofagus obliqua) seeds, near Curicó, in the Andes of central Chile. There, flocks of parakeets partitioned the tree and fed on different terminal branches, two or three birds at the time which manipulated the branches with one foot and the beak, while perching with the other foot. In the meantime, one or two birds perched at the top of the tree and acted as sentinels. We discuss this unusual behavior for the species on the southern range of its distribution in Chile and of other Chilean parrots that also feed on these tree seeds.

Comparación de cuatro métodos de captura de gaviotas dominicanas (Larus dominicanus)
Daniel González-Acuña, Carlos Barrientos, Felipe Corvalán, Jonathan Lara, Karen Ardiles, Daniela Doussang, Christian Mathieu, Juana López, René Ortega, Jordan Torres, Fabiola Cerda & Ricardo a. Figueroa
pp. 21-31 | PDF (259K)

Resumen

Comparison of four methods for capturing Kelp Gulls (Larus dominicanus)
Daniel González-Acuña, Carlos Barrientos, Felipe Corvalán, Jonathan Lara, Karen Ardiles, Daniela Doussang, Christian Mathieu, Juana López, René Ortega, Jordan Torres, Fabiola Cerda & Ricardo a. Figueroa

danigonz@udec.cl

We describe four methods to capture Kelp Gulls (Larus dominicanus) and estimated its efficiency in Talcahuano, Chile. The four methods were: (i) hand-net, (ii) sliding bow lasso, (iii) pliable arch, and (iv) adapted Bal-chatri. The most successful method was the adapted Bal-chatri followed by the sliding bow lasso. The hand-net and the pliable arch were the least efficient methods. The efficiency of these methods diminished after the first capture seemingly due to rapid learning by the gulls. We also comment on the gull’s behavioral displays during capture events.

Confirmación de la presencia de la gallina ciega peruana (Chordeiles acutipennis, HERMANN 1783) en Chile
Marcelo A. Flores
pp. 32-36 | PDF (138K)

Resumen

Confirmation of the presence of Lesser Nighthawk (Chordeiles acutipennis, Hermann 1783) in Chile
Marcelo A. Flores

marceloflores@uach.cl

The Lesser Nighthawk (Chordeiles acutipennis) was first reported in Chile in September 1949 with an individual captured by Francisco Behn in Chacalluta, Arica and Parinacota Region, northern Chile. This record and the information on the collected specimen are presented for the first time in the present note. Subsequently, two other sightings were recorded, however the information is incomplete. In this note, I present a new record of Lesser Nighthawk in the mouth of the Lluta River in September 2009. The individual was observed resting under a pine tree in a zone dominated by low bushes in the southern bank of the river. Among the possible reasons of the lack of records and therefore a lack of information of this species, could be due to (a) lack of observation effort, (b) misidentification of the species and (c) crepuscular habits and cryptic nature of the species. Due to few data available, it´s impossible to determine the actual status of this species, however I suggest to consider the Lesser Nighthawk as a rare species in Chile.

Conteo de aves marinas muertas en la playa la rinconada, antofagasta y comentarios acerca de la distribución de Macronectes halli en Chile
Pablo Fibla, Nicole Sallaberry-Pincheira & Michel Sallaberry
pp. 37-41 | PDF (55K)

Resumen

Counting of seabird carcasses along the coast of La Rinconada, Antofagasta and comments related to the distribution of Macronectes halli in Chile
Pablo Fibla, Nicole Sallaberry-Pincheira & Michel Sallaberry

msallabe@uchile.cl

We report numbers of seabird carcasses found on the beach at La Rinconada, Antofagasta. The dead avifauna found in La Rinconada in winter 2009 was mainly composed by migratory species (Daption capense, Fulmarus glacialoides, Macronectes halli and Puffinus griseus), which migrate north during the austral winter and are more abundant in this area during these months. During summer months, only carcasses from endemic Humboldt Current species were found. Due to fact that the carcasses did not have evidence of any kind of contamination, we suggest that this high mortality of seabirds was related with a warm (El Niño-like) climatic event. Moreover, we discuss the distribution status of M. halli in northern Chile in relation to the discovery of a juvenile carcass at La Rinconada beach and a banded carcass collected from Papudo. These records indicate that M. halli is more abundant than expected in the northern area of Chile.

Descripción de una colonia mixta de pingüino de humboldt (Spheniscus humboldti) y de magallanes (S. magellanicus) en isla metalqui, chiloé, sur de Chile
Luciano Hiriart-Bertrand, Alejandro Simeone, Ronnie Reyes- Arriagada, Victoria Riquelme, Klemens Pütz & Benno Lüthi
pp. 42-47 | PDF (115K)

Resumen

Description of a mixed-species colony of Humboldt (Spheniscus humboldti) and Magellanic Penguin (S. magellanicus) at Metalqui Island, Chiloe, southern Chile
Luciano Hiriart-Bertrand, Alejandro Simeone, Ronnie Reyes- Arriagada, Victoria Riquelme, Klemens Pütz & Benno Lüthi

lhiriart@bio.puc.cl

We describe the mixed-species colony of Humboldt (Spheniscus humboldti) and Magellanic (S. magellanicus) penguins at Metalqui Island in Chiloe, southern Chile. The colony was visited on 8 December 2008 and nests (mostly dirt burrows) were individually checked for contents. Our survey included nearly 24% of the island’s suitable nesting habitat for penguins and indicated a breeding population of 28 and 203 Humboldt and Magellanic Penguins pairs, respectively. Nests contained either adults alone or adults attending chicks (no nests with eggs were observed) suggesting that breeding season was advanced at that time. This represents a species ratio of 1:7, similar to what has been reported for the mixed colony at Puñihuil Islands, 35 km to the north of Metalqui. The present data extends the breeding range of the Humboldt penguin to the south and adds a third mixed-species colony of both penguin species along its overlapping range.

Primer registro de garza chiflón (Syrigma sibilatrix) en Chile
Fernando Díaz & Fabrice Schmitt
pp. 48-50 | PDF (53,1K)

Resumen

First report of Whistling Heron (Syrigma sibilatrix) in Chile
Fernando Díaz & Fabrice Schmitt

fdiazsegovia@gmail.com

We present the first record of the Whistling Heron (Syrigma sibilatrix) in Chile. A single individual was observed from December 22nd of 2009, to January 9th of 2010 at Lake Batuco (33°12’30′’S; 70°49’38′’O, 486 m.s.n.m.), Metropolitan Region, Chile. The bird was identified on the basis of the following field characters: a) similar body size to that of a Snowy Egret, b) uniform gray back, and gray wings with creamy coverts, c) neck, breast and belly uniformly yellowish, d) head with dark gray crown, contrasting with orange cheeks, e) pink bill with black tip, f) blue loral and facial skin, and g) black feet. A photograph of the individual is presented.

La presencia de Pseudocolopteryx citreola en el este de argentina y comparación de su voz con la de otros doraditos
Bernabé López-Lanús, Darío E. Unterkofler, Ulises Ornstein, Roberto Güller, Reginaldo Lejarraga, Cristóbal Doiny Cabre, Rosemary L. Scoffield & Cecilia Kopuchian
pp. 51-58 | PDF (103K)

Resumen

The prescence of Pseudocolopteryx citreola in eastern Argentina, with comparisons of voice with other doraditos
Bernabé López-Lanús, Darío E. Unterkofler, Ulises Ornstein, Roberto Güller, Reginaldo Lejarraga, Cristóbal Doiny Cabre, Rosemary L. Scoffield & Cecilia Kopuchian

opezlanusbll@yahoo.com

The Ticking Doradito (Pseudocolopteryx citreola) was included in P. flaviventris until a recent taxonomic revalidation. The plumages of the two species are virtually indistinguishable and so recording their vocalizations is necessary in order to identify the species with any certainty. In Chile P. citreola is found in the centre of the country and it is a migrant but its winter distribution is unknown. In Argentina the situation is more complicated as it is possible to find this species and P. flaviventris in the same areas. In Argentina P. citreola occurs in the foothills of the Andes from Río Negro to Salta and it even reaches low lying areas in Bolivia. We present the first two recordings of P. citreola vocalizations for the eastern sector of the Southern Cone (one from eastern Entre Ríos and the other from southwestern Buenos Aires province, Argentina, both in November). We comment on potential confusions created by our new data in reference to the distribution of P. flaviventris in the Cisandean region. Possibly our new records of P. citreola records represent a west-east migration pattern. A phonetical comparison and sonograms showing the differences between the song of this species and the other Pseudocolopteryx are presented. The voices of P. citreola resemble those of P. dinellianus and (to a lesser extent) those of P. acutipennis, and are markedly different from those of P. flaviventris. The voices of P. citreola in Salta province, northwestern Argentina, are somewhat different from those elsewhere, and merit further research.