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Introduction
I am a Biology Teacher with a broad interest toward native wildlife. Throughout my career I have leadered and I have been part of a number research projects or baseline studies on the ecology of raptors, forest birds, waterfowl, wildlife in agricultural systems, small mammals, carnivores, huemul deer and insects. My main research interest is focused on evaluating potential ecological indicators using raptors and forest crickets as models, and the adaptation of native birds to urban expansion. As a vocational teacher, I have spent a great deal of time generating educational projects and materials.At this moment, my educational interest is focused on emphasizing the importance of emotional components in the nature conservation, and educational virtue of "non-charismatic" species.
Additional affiliations
January 2001 - present
Independent Researcher
Education
March 2006 - December 2012
Field of study
- Conservation of Forests and Biodiversity, Ecological Indicators
March 1986 - December 1990
Publications
Publications (104)
Como vecinos nos preocupa la pérdida y daño de los componentes naturales de nuestra ciudad. Sabemos que esos componentes son fundamentales para contribuir a preservar la biodiversidad local y regional. Los componentes naturales más comunes en nuestro barrio son los árboles y prados que están en las calles, plazas y patios de vecinos y colegios. Eso...
Resumen.-El nuco (Asio flammeus) es un depredador tope en el ecosistema terrestre del archipiélago de Juan Fer-nández, pero su dieta es escasamente conocida allí. Durante marzo de 2005 recolectamos 19 regurgitados de nuco en un pastizal de la isla Robinson Crusoe. El análisis de los regurgitados reveló que los nucos depredaron sobre conejos europeo...
Between 2005 and 2009, we studied the breeding biology of Many-colored Rush-Tyrants (Tachuris rubrigastra) in a 2-ha tall-rush patch in south-central Chile. We monitored the nesting activity by visiting 59 active nests at 2˗3 days intervals. Nesting was markedly seasonal, concentrating during spring months. Tyrants built pensile, conical open-cup n...
The Rufous-tailed Hawk (Buteo ventralis) is one of the most threatened and little-known South American forest dependent raptors. Its known northern range limit in Chile is the Maule River (35°S). Between 2012-2023, we recorded 27 observations of the Rufous-tailed Hawk in central Chile that extends its northern range by 290 km. Our northernmost reco...
The Rufous-tailed Hawk is among the rarest and most threatened raptors in the Americas. It is quasi-endemic to the temperate forests of southern Chile, with a few pairs located in the same habitat in western Argentina, as well as the sclerophyllous and deciduous forests of central Chile. This hawk species occurs in mature lowland forests from sea l...
Editors' note.-In the previous issue, we published this editorial with Spanish-speaking authors and readers in mind because they constitute most of our audience. However, several non-Spanish-speaking authors have published the results of their studies in our journal, and others may intend to do so. Therefore, for our message also to reach them, we...
Conjunto de datos correspondiente a 122 eventos de monitoreo asociados a 407 ocurrencias, donde se registra la presencia de 9 especies de aves rapaces y 29 no rapaces a lo largo de 8 monitoreos mensuales entre diciembre 2019 y septiembre 2020, registrados en diferentes puntos de muestreo de observación y playback ubicados en un predio agrícola de a...
Si tú no comprendes la narrativa, no comprendes completamente la ciencia. Olson (2015)
Ornithologists write their articles using either the passive voice, the active voice, or a combination of both. A passive-voice sentence emphasizes to whom (or what) receives the action, often excluding the agent (i.e., who acts). Instead, the active voice emphasizes the agent (e.g., the ornithologist, the birds). Thus, ornithologists transmit grea...
Here I identify five reasons why ornithologists have a lot to say and doing regard to CoViD-19. First, coronaviruses are not new to ornithologists. For decades, researchers have identified different coronaviruses in wild birds and poultry, allowing ornithologists to gain insight into the nature of these viruses. Second, quarantines are an opportuni...
En esta presentación resumo mis observaciones hechas durante 12 años (2007-2019) sobre la nidificación de tres especies comunes y conspicuas dentro de la ciudad de Valdivia: la bandurria, el tiuque y el queltehue. Mis registros revelan como una ciudad bien arborizada y con abundantes sitios vacantes puede contener cientos de nidos de aves.
The Rufous-tailed Hawk Buteo ventralis is a medium-sized raptor, quasiendemic to the southern temperate forest ecoregion of Chile and marginally in Argentina. We only recorded a few pa irs in the coastal sclerophyllous forests of central Chile. In less than 200 years, a large proportion of lowland old-growth forests required by this species for cou...
The Chilean Hawk Accipiter chilensis is endemic to the southernmost South American forests. It nests in old or second-growth forests and in mature plantations of Pinus radiata with native vegetation. Chilean Hawk hunting habitats include forests, pine plantations and open areas among forest remnants, during winter they even hunt in cities. They bui...
Between 2007 and 2008, we evaluated the seasonal richness, abundance and diversity of bird species in the Isla Mocha National Reserve, southern Chile. We recorded birds in point-count stations (radius = 50 m, length = 10 min) in five habitat types: coastline, pastureland, prairie with trees, forest-prairie ecotone, and Valdivian forest. We also inc...
We quantified the güiña diet (Leopardus guigna) by analyzing 39 scats collected during summer–autumn 2001 in an Andean mixed Nothofagus–Lophozonia forest, southern Chile. Five small mammal species, three passerine species, lizards of one genus, and insects of two orders were identified in the scats. Small mammals were the most frequently consumed p...
Los insectos operan tanto como los “ingenieros” y los “obreros” que mantienen los ecosistemas funcionando y produciendo “a toda máquina”. Gracias a esto, nos proporcionan una variedad de bienes y servicios. Así, los insectos conforman una parte importante del capital natural; es decir, la reserva de riqueza ecológica o los activos ambientales que s...
To achieve a better understanding of the life histories of Chilean owls and to generate a useful source of information for future studies, we undertook an exhaustive review of all available information relating to their taxonomy, natural history, ecology, genetic and conservation biology. Studying these topics we gathered information on morphology,...
The Eared Dove (Zenaida auriculata) is a common bird in Chile with a wide distributional range associated with agro-ecosystems. Despite its wide distribution, Eared Dove food ecology has not been studied in Chile. This study examined the diet of the Eared Dove and analyzed its seasonal variation to infer its potential agricultural impact in Ñuble P...
Between the summer 2002 and 2005 was evaluated the richness and abundance of birds associated to the Carriel Sur Airport of Talcahuano and was estimated the collision risk representing each species for air navigation. Birds were counted in 10 count points distributed in different habitats around the landing runways. The collision risk was estimated...
Las rapaces constituyen un linaje de aves con más de 310 especies descritas actualmente. Son consideradas depredadores tope y se han especializado en la captura tanto de presas vivas para proveerse de alimento, entre las cuales se incluyen insectos, anfibios, reptiles, aves y micromamíferos, como también en consumir carroña, ya que actúan como verd...
ABSTRACT.- The Ñuble province (36° S) is known to be the northern limit of the population distribution of the Rufous-tailed Hawk (Buteo ventralis) in Chile, except for a sighting near Constitución (35° S). Here we document new records of the Rufous-tailed Hawk that allow extending the northern range of its breeding distributionin the country (35−38...
La revisión de manuscritos por colegas pares parece ser la mejor manera conocida para mantener la calidad y rigor de las publicaciones científicas. No obstante, este proceso no siempre garantiza que los artículos publicados estén libres de omisiones significativas. En mi experiencia personal como revisor de manuscritos de revistas ornitológicas he...
Chaco Owl is a medium-sized owl that is distributed through a 766,000 km2 area of southern South America, from the Chaco region of southern Bolivia (Santa Cruz) south western Paraguay and to Argentina, south to Córdoba and Buenos Aires provinces. This owl inhabits both dense and open forests and shrubs on either hilly, rolling and flat areas. Its d...
The diet of the California quail (Callipepla californica) was determined following analysis of the contents of the crop and muscular stomach of 124 individuals captured in Ñuble province, VIII Region of Chile during the summer of 1995 (N = 96) and the winter of 1999-2001 (N = 28). In summer, 35 different types of seeds were observed, of which Vicia...
During four successive breeding periods (2007–11) we characterized the nesting territories of the white-throated hawk (Buteo albigula) in southern Chile. Territories were located in mountainous areas with mature native forest (n = 17) or mature pine plantations (n = 1). Most of the territories were distant from urban centres (>2 km). Only one or tw...
Based on rodent trappings in eight localities from 1998 to 2005 (14,984 trap-nights), we provide detailed information on abundance, habitat and additional body measurements of the Long-clawed Mouse (Pearsonomys annectens), a rare rodent in the Valdivian temperate rainforest. The Long-clawed Mouse was collected in three localities only in both highl...
Abstract. – Ecology and conservation of Chilean owls: progress and research challenges. – We summarize
progress and pending challenges in ecological research and biological conservation of the Chilean owls. Ecological aspects in which substantial or preliminary progress have been made includes ecology at
individual, population, community, functiona...
Diet of Harris' hawks (Parabuteo unicinctus) was analyzed using 94 pellets and 128 remains of prey collected during autumn-winter 2006 and 2007 in Reserva Oasis la Campana, a privately protected coastal area in central Chile. Hawks consumed primarily small mammals (69.6% frequency, 88.4% biomass). Although native rodents were consumed most frequent...
We describe the flight behavior of the Red-backed Hawk (Buteo polyosoma) during summer in Nevados de Chillán, Chile. Flight types most often used were gliding, wind-hovering and soaring (36.7%, 29.4% and 27.8% of the flying time [995.91 min], respectively). Spent time in gliding and wind-hovering peaked at mid-afternoon (17:00-19:00 h). Conversely,...
Durante 9 años, desde marzo de 2001 hasta diciembre de 2009, colectamos los parásitos externos y gastrointestinales de 15 halcones Falco sparverius cinnamominus de un centro de rehabilitación en la Región del Biobío en el centro-sur de Chile. Los helmintos colectados incluyeron una especie de trematodo (Ascocotyle felippei), una especie de cestodo...
Abstract. – Reproduction of the Rufous-tailed Hawk (Buteo ventralis) in temperate rainforest remnants of the Araucanía, southern Chile. – During four breeding seasons (2007–2011) we observed thereproduction of the Rufous-tailed Hawk in the Araucanía, southern Chile. Breeding territories (N = 42)were located in mountainous areas widely covered by na...
Between the breeding seasons 2008 and 2009 we studied the nesting and breeding of Fulica armillata and F. rufifrons inhabiting a natural lagoon in an agro-forestry area of central-south Chile. We studied the differences in characteristics of nest, eggs, incubation, hatching success and characteristics of the young, with the aim provide basic data o...
We studied the breeding biology of the Wren-like Rushbird (Phleocryptes melanops) during three reproductive seasons from 2005 to 2008 in the Santa Elena lagoon, province of Nuble, south-central Chile. Reproductive activity was initiated with courtships during the late winter and finished with nest abandonment during the early summer. The first eggs...
In 2004-05, we evaluated seasonal variation in the diet of White-tailed Kites in a suburban area of Concepcion, southern Chile. Kites' diet was determined based on pellets (N = 209) and consisted of rodents, insects and birds (95.6%, 13.8% and 0.6% of all consumed individual prey [N = 343]). Olivaceous field mice (Abrothrix olivaceus) and long-hair...
We compared the consumption of rodent prey by barn owl Tyto alba and short-eared owl Asio flammeus during winter in agricultural areas in southern Chile. Diets were studied on the basis of pellets collected during the winters of 1986, 1987 and 1996. Both owl species consumed a large number of different rodent prey (8-9 species), but they preyed mor...
La dieta de Parabuteo unicinctus fue analizada utilizando 23 egagrópilas y 41 restos de presa recolectados durante la temporada reproductiva 2003–04 en el Aeropuerto Carriel Sur de Concepción, en el sur de Chile. Los mamíferos formaron la mayor parte de la dieta (64.7% por frecuencia, 70.6% por biomasa). Aunque Oligoryzomys longicaudatus fue la pre...
We describe species of lice collected from 12 species of Chilean diurnal raptors. Sampled raptors were obtained front wildlife rehabilitation centers and zoos, as carcasses found along highways, and from the avian collection of the National Museum of Natural History,. Fourteen species office were isolated front all raptor hosts, with genus Degeerie...
Registros del Aguilucho Chico (Buteo albigula) en los bosques costeros de Chile. The White-throated Hawk (Buteo albigula) is a little-known, migratory, South American for-est raptor (Pavez 2000, Trejo et al. 2006). Up to date, only two main distribution areas are known for this hawk species: the southern temperate rainforest, where it breeds (Gelai...
We quantified the diet of the Rufouslegged Owl (Strix rufipes) by analysing 63 pellets collected during 2003 and 2005 in a small coastal sclerophyllous forest stand at the northern limit of its distribution in Chile (31-32 degrees S). The diet comprised small mammals (frequency 57.8%, biomass = 99.3%), crustaceans (frequency 1.7%, biomass 0.1%), an...
During the breeding seasons 2001-2005 we determined the nest measurements and characteristics of a Chilean Hawk (Accipiter chilensis) pair in an Andean Nothofagus forest of northern Patagonia (36 degrees S; 50 km east of Chillan). The five platforms were built on forked branches in the upper part of the trees, 16-20 m above ground. One nest and one...
We quantified the diet of the Rufous‐legged Owl (Strix rufipes) by analyzing 40 pellets collected during the austral autumn 2001, 2003 and 2004 in an Andean Nothofagus–Araucaria forest, southern Chile. Five small mammal species, two passerine birds, insects of two orders, four scorpions and a snail were identified in the pellets. Although insects w...
We review the published information on the raptor species present in the temperate forests of southern South America, focusing our efforts in the four forest-specialist species, that is, forest-depending species especially for nesting. We examined nine categories of ecological knowledge: distribution, habitat/habitat selection, movements, abundance...
La intervención humana en los ecosistemas naturales,
particularmente bosques, es la principal
causa de encuentros con reservorios naturales de
organismos patógenos desconocidos y, por ende,
enfermedades transmitidas por animales silvestres
autóctonos en América. Entre las últimas enfermedades
emergentes en América, el Síndrome Pulmonar
por Hantavir...
We quantified the diet of the Chilean Hawk (Accipiter chilensis) by analyzing 495 prey remains collected during two breeding seasons (2001–2002 and 2002–2003) in an Andean Nothofagus forest of Nevados de Chillán, northern Patagonia. The diet was almost exclusively birds (97.8% of all prey remains), with relatively few rodents (1.6%) and insects (0....
