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Articles 82141 - 82170 of 819792
Full-Text Articles in Entire DC Network
Primeros Registros De Anidación Del Caracolero Haematopus Palliatus En La Isla De Margarita, Venezuela / First Nesting Records Of The American Oystercatcher Haematopus Palliatus On Margarita Island, Venezuela, Virginia Sanz D'Angelo, Gianco Angelozzi-Blanco, Wilber Bernay-Alfonzo
Primeros Registros De Anidación Del Caracolero Haematopus Palliatus En La Isla De Margarita, Venezuela / First Nesting Records Of The American Oystercatcher Haematopus Palliatus On Margarita Island, Venezuela, Virginia Sanz D'Angelo, Gianco Angelozzi-Blanco, Wilber Bernay-Alfonzo
Revista Venezolana de Ornitología
We report the first nesting events to the American Oystercatcher Haematopus palliatus on Margarita Island, Nueva Esparta State, Venezuela. Nesting records were obtained opportunistically while we were searching for nests of other shorebird species. Our observations consisted of two nests found in June 2021 on the eastern beaches of the town El Horcón, and one sighting of a pair of adults with two juveniles at Arapano lagoon in Laguna de La Restinga National Park. From one of the nests, we had evidence of the hatching of at least two chicks. In June 2022, we found an additional nest on the …
Censo Neotropical De Aves Acuáticas En Venezuela 2021 / Neotropical Waterbird Census In Venezuela 2021, Cristina Sainz-Borgo, Gianco Angelozzi-Blanco, Wilber Bernay-Alfonzo, Juan Carlos Fernández-Ordóñez, Alejandro Luy, Margarita Martínez, Miguel Nieves González, Sabino Silva, Lermith Torres, Miguel Ángel Torres
Censo Neotropical De Aves Acuáticas En Venezuela 2021 / Neotropical Waterbird Census In Venezuela 2021, Cristina Sainz-Borgo, Gianco Angelozzi-Blanco, Wilber Bernay-Alfonzo, Juan Carlos Fernández-Ordóñez, Alejandro Luy, Margarita Martínez, Miguel Nieves González, Sabino Silva, Lermith Torres, Miguel Ángel Torres
Revista Venezolana de Ornitología
El Censo Neotropical de Aves Acuáticas (CNAAV) es un proyecto regional a largo plazo que en 2021 cumplió 16 años consecutivos en Venezuela. Se cuantificaron 78 especies (73 en febrero y 55 en julio), 35.662 avistamientos (30.546 en febrero y 5.116 en julio), pertenecientes a 19 familias (18 en febrero y 16 en julio). Durante los conteos del 2021,se registraron 49 especies residentes (47 en febrero y 31 en julio), 22 migratorias (21 en febrero y 16 en julio), y ocho residentes con poblaciones que migran desde o hacia la región neártica (6 en febrero y 6 en julio), para …
Aperchamiento Norcturno Masivo De La Golondrina De Río Progne Tapera Asociado A Instalaciones Eléctricas En Mérida, Venezuela / Massive Nocturnal Perching Of The Brown-Chested Martin Progne Tapera Associated With Electrical Structures In Mérida, Venezuela, Marisela Angelino, Jaime E. Péfaur
Aperchamiento Norcturno Masivo De La Golondrina De Río Progne Tapera Asociado A Instalaciones Eléctricas En Mérida, Venezuela / Massive Nocturnal Perching Of The Brown-Chested Martin Progne Tapera Associated With Electrical Structures In Mérida, Venezuela, Marisela Angelino, Jaime E. Péfaur
Revista Venezolana de Ornitología
Un aperchamiento nocturno masivo de una especie migratoria, la Golondrina de Río Progne tapera, se reportó de mayo a octubre de cada año entre el 2010 y el 2017 en la Subestación Eléctrica El Vigía I de la empresa CORPOELEC, Municipio Alberto Adriani, Estado Mérida, Venezuela. En las visitas a la subestación se apreció el arribo diario de las golondrinas de río a aproximadamente las 18:30 h, posándose en cables y estructuras metálicas, culminando la actividad de apercharse a las 19:00 h. El despegue y alejamiento ocurría aproximadamente a las 06:00 h del día siguiente. La elección de este tipo …
Inventario Bibliográfico Sobre Los Nidos De Las Aves De Venezuela / Bibliographical Account Of Bird Nests In Venezuela, Miguel Matta-Pereira, Miguel Lentino, Leonardo Lentino, Gianco Angelozzi, Jhorman Piñero, Margarita Martínez
Inventario Bibliográfico Sobre Los Nidos De Las Aves De Venezuela / Bibliographical Account Of Bird Nests In Venezuela, Miguel Matta-Pereira, Miguel Lentino, Leonardo Lentino, Gianco Angelozzi, Jhorman Piñero, Margarita Martínez
Revista Venezolana de Ornitología
Con la finalidad de conocer el nivel de conocimiento sobre los nidos descritos para las aves de Venezuela, se realizó una búsqueda sistemática de la literatura circunscrita a la región Neotropical. Dentro de los límites geográficos comprendidos entre la Isla de Aves y la Serranía de la Neblina, fueron relevantes las descripciones de nidos encontrados dentro de Venezuela. Evaluamos 1.257 aves residentes, 96 aves migratorias (boreales y australes), 43 errantes, 46 endémicas, 18 hipotéticas, seis especies exóticas y una especie extinta. De las 1.257 especies de aves residentes, 1.016 presentaron una descripción sobre el nido en la región Neotropical. Se …
Filogeografía E Historia Evolutiva Del Género Euchrepomis (Aves: Thamnophilidae) / Phylogeography And Evolutionary History Of The Genus Euchrepomis (Aves: Thamnophilidae), Andreína López-Marcos, Jorge Pérez-Emán
Filogeografía E Historia Evolutiva Del Género Euchrepomis (Aves: Thamnophilidae) / Phylogeography And Evolutionary History Of The Genus Euchrepomis (Aves: Thamnophilidae), Andreína López-Marcos, Jorge Pérez-Emán
Revista Venezolana de Ornitología
La Región Neotropical se caracteriza por una alta diversidad biológica, cuyo origen y mantenimiento está asociado no solo a los factores bióticos y abióticos del presente sino a la compleja y dinámica historia geológica y climática de la región. El conocimiento de los patrones de diversidad actuales y los procesos evolutivos subyacentes se ha incrementado gracias a la realización de estudios filogeográficos, particularmente en especies con amplia distribución y/o presencia de poblaciones disyuntas. Euchrepomis (Aves: Thamnophilidae) es un género de hormigueros de amplia distribución considerado como representante de un linaje que divergió a nivel basal en la historia evolutiva de …
In Memoriam: Raymond Mcneil (1936–2022), M. Andreína Pacheco, Gedio Marín
In Memoriam: Raymond Mcneil (1936–2022), M. Andreína Pacheco, Gedio Marín
Revista Venezolana de Ornitología
No abstract provided.
Primer Registro Del Tejedor Africano Ploceus Cucullatus En El Estado Miranda, Venezuela / First Record Of Village Weaver Ploceus Cucullatus In Miranda State, Venezuela, Hugo Rodríguez-García, Miguel Nieves
Primer Registro Del Tejedor Africano Ploceus Cucullatus En El Estado Miranda, Venezuela / First Record Of Village Weaver Ploceus Cucullatus In Miranda State, Venezuela, Hugo Rodríguez-García, Miguel Nieves
Revista Venezolana de Ornitología
The introduction of exotic species is one of the main threats to biodiversity. In Venezuela, several exotic birds have been recorded, most of them corresponding to trade species. The goal of this note is to report the presence of the Village Weaver Ploceus cucullatus in Miranda state. The observations were made on July 14, 2021 in the Nueva Casarapa lagoon located in Guatire. Forty five Village Weavers were recorded (32 males, 13 females) and a breeding colony with 50 nests was located. Three nests were measured and deposited in the Ornithology Collection of La Salle Natural History Museum, Caracas, Venezuela. …
Incidencia De Muertes Por Colisión En Algunas Especies De Rallidae En La Ciudad De Mérida, Estado Mérida, Venezuela / Death Incidence Due To Collisions In Some Species Of Rallidae In The City Of Mérida, Mérida State, Venezuela, Luis A. Saavedra, María Escalona-Cruz
Incidencia De Muertes Por Colisión En Algunas Especies De Rallidae En La Ciudad De Mérida, Estado Mérida, Venezuela / Death Incidence Due To Collisions In Some Species Of Rallidae In The City Of Mérida, Mérida State, Venezuela, Luis A. Saavedra, María Escalona-Cruz
Revista Venezolana de Ornitología
Collisions of birds against man-made structures generate high mortality in birds, especially if they are migratory species because they are attracted and disoriented by artificial illumination. Several species of Rallidae carry out nocturne migratory movements which make these birds prone to crash in the cities. Due to that, data of death Rallidae by collisions was collected in Mérida’s city, Venezuela. A total of 32 individuals were recorded, 19 of them were found by chance around man-made structures (buildings, billboards) between 2020–2021, and 13 specimens (collected between 1970–2012) were deposited in the Vertebrate’s Collection of Universidad de Los Andes (CVULA). Four …
Ampliación Del Rango Altitudinal Y Primeros Registros Del Garrapatero Hervidor Crotophaga Major En La Ciudad De Mérida Y Sus Alrededores / Altitudinal Range Extension And First Records Of The Greater Ani Crotophaga Major In Mérida City And Its Surrounding Areas, María Escalona-Cruz, Alejandro David Bonive-Boscan, José Medina Bastidas, Luis Barreat
Ampliación Del Rango Altitudinal Y Primeros Registros Del Garrapatero Hervidor Crotophaga Major En La Ciudad De Mérida Y Sus Alrededores / Altitudinal Range Extension And First Records Of The Greater Ani Crotophaga Major In Mérida City And Its Surrounding Areas, María Escalona-Cruz, Alejandro David Bonive-Boscan, José Medina Bastidas, Luis Barreat
Revista Venezolana de Ornitología
In order to contribute to the knowledge of the distribution of the Greater Ani Crotophaga major in Venezuela, we report the first records of the species within an altitudinal range of 1,540–2,680 m asl. Between December 2014 and May 2021, 11 individuals were sighted in seven different occasions through the main urban park of Mérida city and its surrounding areas, mainly associated to grasslands close to residential areas, and montane forest borders in the periphery. These observations represent the highest records for Venezuela and they could reflect an extension of distribution due to land transformation or migratory movements.
Registros De Aves Playeras En Zonas Urbanas De Caracas, Venezuela / Records Of Shorebirds In Urban Areas Of Caracas, Venezuela, Miguel Nieves
Registros De Aves Playeras En Zonas Urbanas De Caracas, Venezuela / Records Of Shorebirds In Urban Areas Of Caracas, Venezuela, Miguel Nieves
Revista Venezolana de Ornitología
Studies directed at shorebirds in urban areas in Venezuela are taking importance. The objective of this work is to report the presence of shorebirds in urban areas of Caracas. Visual records were carried out throughout 2019, 2020 and 2021 around water bodies of five different localities: Generalisimo Francisco de Miranda Park, Simón Bolívar Park, Caricuao Zoo, Laguito de Los Próceres area, and Guaire river. A total of 90 shorebirds records were obtained, harbored 10 species of three families: Charadriidae, Recurvirostridae and Scolopacidae. Two species were resident and eight migratory (boreal). Also, two species are new records from Caracas: the Semipalmated …
Censo Neotropical De Aves Acuáticas En Venezuela 2020 / Neotropical Waterbird Census In Venezuela 2020, Cristina Sainz-Borgo, Alexis Araujo-Quintero, Gianco Angelozzi-Blanco, Juan Carlos Fernández-Ordóñez, José Ferrebuz, Gaizkale Garay, Oswaldo Hernández, Alejandro Luy, Margarita Martínez, Sabino Silva, Lermith Torres, Miguel Ángel Torres
Censo Neotropical De Aves Acuáticas En Venezuela 2020 / Neotropical Waterbird Census In Venezuela 2020, Cristina Sainz-Borgo, Alexis Araujo-Quintero, Gianco Angelozzi-Blanco, Juan Carlos Fernández-Ordóñez, José Ferrebuz, Gaizkale Garay, Oswaldo Hernández, Alejandro Luy, Margarita Martínez, Sabino Silva, Lermith Torres, Miguel Ángel Torres
Revista Venezolana de Ornitología
El Censo Neotropical de Aves Acuáticas (CNAA) arribó a sus 17 años de realización consecutiva en Venezuela durante el 2020. Durante este año los conteos se realizaron del 01 al 16 de febrero y del 04 al 19 de julio. Se contaron un total de 23.781 avistamientos (20.021 en febrero y 3.760 en julio), pertenecientes a 95 especies (92 en febrero y 40 en julio) y 19 familias, siendo las de mayor riqueza Scolopacidae y Ardeidae. Las especies residentes más abundantes fueron la Garcita Reznera Bubulcus ibis (3.318 avistamientos), el Yaguaso Cariblanco Dendrocygna viduata (2.337 avistamientos) y la Zamurita Phimosus …
Nueva Información Sobre La Biología Del Atrapamoscas Pigmeo Ojiblanco Atalotriccus Pilaris De Venezuela / New Insights On The Biology Of The Pale-Eyed Pygmy-Tyrant Atalotriccus Pilaris Of Venezuela, Cristina Sainz-Borgo
Nueva Información Sobre La Biología Del Atrapamoscas Pigmeo Ojiblanco Atalotriccus Pilaris De Venezuela / New Insights On The Biology Of The Pale-Eyed Pygmy-Tyrant Atalotriccus Pilaris Of Venezuela, Cristina Sainz-Borgo
Revista Venezolana de Ornitología
The Pale-eyed Pygmy-Tyrant Atalotriccus pilaris is a small tyrant flycatcher, characterized by greatly shortened and narrow outer four primaries. Many aspects of its biology and ecology remain poorly known. The general aim of this study was to quantify some aspects of morphology, diet, breeding and molt of the species. I examined museum specimens of the three Venezuelan sub-species: A. p. pilaris from south-western Venezuela, A. p. venezuelensis from northern Venezuela, and A. p. griseiceps from Bolívar state (south of Venezuela). Additionally, 31 captured individuals of A. p. venezuelensis were examined and measured. Morphometric differences between subspecies, age and sex were …
Temporada Reproductiva Y Sitios De Nidificación Del Canario De Tejado Sicalis Flaveola En Un Área Urbana De La Ciudad De Mérida, Andes De Venezuela / Breeding Season And Nesting Sites Of The Saffron Finch Sicalis Flaveola In An Urban Area Of The City Of Mérida, Andes Of Venezuela, Luis A. Saavedra, María Escalona-Cruz, Carla I. Aranguren
Temporada Reproductiva Y Sitios De Nidificación Del Canario De Tejado Sicalis Flaveola En Un Área Urbana De La Ciudad De Mérida, Andes De Venezuela / Breeding Season And Nesting Sites Of The Saffron Finch Sicalis Flaveola In An Urban Area Of The City Of Mérida, Andes Of Venezuela, Luis A. Saavedra, María Escalona-Cruz, Carla I. Aranguren
Revista Venezolana de Ornitología
El Canario de Tejado Sicalis flaveola se considera una especie relacionada a ambientes alterados. Con el propósito de determinar su temporada reproductiva, sitios de anidación y reutilización de nidos en la zona céntrica de la ciudad de Mérida, región andina de Venezuela, se realizaron recorridos una vez al mes desde marzo del 2020 hasta marzo de 2021 por ocho avenidas, sus calles trasversales y cinco plazas para buscar e identificar los nidos en diferentes estructuras de la ciudad a través de observaciones visuales directas. Una vez detectado, cada nido fue monitoreado durante ±10 minutos para caracterizarlo y determinar su estado …
A Critical Review Of Egg Descriptions For The Sucre Antpitta Grallaricula Cumanensis Based On The Ragnar Kreuger Oological Collection Of The Finnish Museum Of Natural History, Finland / Revisión Crítica De La Descripción De Los Huevos Del Ponchito De Sucre Grallaricula Cumanensis Basados En La Colección Oológica Ragnar Kreuger Del Museo Finlandés De Historia Natural, Finlandia, Vladislav Marcuk, Donovan De Boer, Harold F. Greeney
A Critical Review Of Egg Descriptions For The Sucre Antpitta Grallaricula Cumanensis Based On The Ragnar Kreuger Oological Collection Of The Finnish Museum Of Natural History, Finland / Revisión Crítica De La Descripción De Los Huevos Del Ponchito De Sucre Grallaricula Cumanensis Basados En La Colección Oológica Ragnar Kreuger Del Museo Finlandés De Historia Natural, Finlandia, Vladislav Marcuk, Donovan De Boer, Harold F. Greeney
Revista Venezolana de Ornitología
We provide a summary of published information on eggs of the endemic Sucre Antpitta Grallaricula cumanensis from Venezuela. Following the formal description of the eggs of G. c. cumanensis more than a half century ago, the natural history and breeding biology of the species still remains virtually unknown. During our investigation of inconsistencies in the linear measurements in the literature, we examined the original collection labels associated with the only three egg sets known for the Sucre Antpitta, all held at the Finnish Museum of Natural History. Herein we provide corrected linear measurements for the eggs of the Sucre Antpitta, …
Primer Registro De Leucismo Total Para La Tijereta De Mar Fregata Magnificens En Venezuela / First Record Of Total Leucism For The Magnificent Frigatebird Fregata Magnificens In Venezuela, Luis A. Bermúdez-Villapol, Anahy Marcano, Gilberto Figueroa, Félix Moya, Fayruz El Halibi, Mary Velásquez, Juan Carlos Fernández-Ordóñez
Primer Registro De Leucismo Total Para La Tijereta De Mar Fregata Magnificens En Venezuela / First Record Of Total Leucism For The Magnificent Frigatebird Fregata Magnificens In Venezuela, Luis A. Bermúdez-Villapol, Anahy Marcano, Gilberto Figueroa, Félix Moya, Fayruz El Halibi, Mary Velásquez, Juan Carlos Fernández-Ordóñez
Revista Venezolana de Ornitología
Plumage aberrations in birds are not unusual and have been sporadically mentioned in literature, in which different patterns and variations are described. Leucism is an inherited disorder, characterized on birds by the lack of pigments in part or all of the plumage, and normal coloration of soft parts such as the bill, eyes, and legs. We present here the fi rst record of total leucism in Magnifi cent Frigatebird Fregata magnifi cens, and the fi rst for the species in Venezuela. Long-term studies are needed in the Neotropical region to evaluate survival and breeding success in leucistic birds.
Setophaga Dominica, Una Reinita Migratoria Nueva Para Venezuela / Setophaga Dominica, A New Migrant Wood-Warbler For Venezuela, Yaudimar Bermúdez, Jhonathan E. Miranda, Juan Carlos Yarza, Freddy Velazquez, Luis Alberto Matheus, José Gustavo León
Setophaga Dominica, Una Reinita Migratoria Nueva Para Venezuela / Setophaga Dominica, A New Migrant Wood-Warbler For Venezuela, Yaudimar Bermúdez, Jhonathan E. Miranda, Juan Carlos Yarza, Freddy Velazquez, Luis Alberto Matheus, José Gustavo León
Revista Venezolana de Ornitología
On October 26, 2019 two warblers from the Setophaga genus were recorded in La Vela de Coro, Falcon State, northwestern Venezuela. These individuals were originally reported online as Blackburnian Warbler Setophaga fusca, the best match available in Venezuelan fi eld guides. That record included an undistinguished photo image. But an exhaustive review noted that the image in the photograph perhaps belonged to another Warbler: S. dominica. A bird watching group moved to the original locality in order to harbor more evidence. Seven additional records were obtained, as well as photo evidence of the presence of S. dominica in Venezuela. These …
Aves Introducidas En El Parque Nacional Henri Pittier, Venezuela / Introduced Birds To The Henri Pittier National Park, Venezuela, Alberto Fernández-Badillo
Aves Introducidas En El Parque Nacional Henri Pittier, Venezuela / Introduced Birds To The Henri Pittier National Park, Venezuela, Alberto Fernández-Badillo
Revista Venezolana de Ornitología
In order to assemble the historical information about the introduced birds reported in the Henri Pittier National Park and its areas of infl uence, an exhaustive literature review was performed based on 50 years of data. The work also reports on the current status of the species involved (established, not established), as well as their relative abundance and the potential threat to ecosystem and agriculture. A total of eight introduced bird species have been recorded in the Henri Pittier National Park. Most species were found still in their introduction stage, except for the Cattle Egret Bubulcus ibis and the Rock …
Niveles De Cinco Metales Pesados En Diferentes Tejidos Del Periquito Australiano Melopsittacus Undulatus, Un Ave Exótica De Cautiverio En Venezuela / Levels Of Five Heavy Metals In Different Tissues Of The Budgerigar Melopsittacus Undulatus, An Exotic And Captivity Bird Of Venezuela, Patricia Vargas-Amundaray, Jorge Muñoz-Gil, Gedio Marín-Espinoza, Adrián Brito-Maestre, Roseline Zabala-Marcano
Niveles De Cinco Metales Pesados En Diferentes Tejidos Del Periquito Australiano Melopsittacus Undulatus, Un Ave Exótica De Cautiverio En Venezuela / Levels Of Five Heavy Metals In Different Tissues Of The Budgerigar Melopsittacus Undulatus, An Exotic And Captivity Bird Of Venezuela, Patricia Vargas-Amundaray, Jorge Muñoz-Gil, Gedio Marín-Espinoza, Adrián Brito-Maestre, Roseline Zabala-Marcano
Revista Venezolana de Ornitología
In Venezuela, bird species of different natural environments have been used in heavy metals (HP) tests. Nevertheless, studies in captive birds are unexisting. Cadmium (Cd), zinc (Zn), lead (Pb), copper (Cu), and chromiun (Cr) levels were examined in liver, pectoral muscle and feathers of captive Budgerigars Melopsittacus undulatus. Concentrations of Cd, Zn and Cu showed highly signifi cant differences among analyzed tissues, following the patterns: liver> feathers> muscle for Cd; feathers> liver> muscle for Zn; and feathers> muscle> liver for Cu. The Cr showed the follow pattern: muscle> feathers> liver, but there were no difference . The Pb was only …
Pesos Y Morfometría De Algunas Aves Del Nororiente De Venezuela / Body Mass And Morphometric Data Of Some Birds From Northeastern Venezuela, Gedio Marín, Jorge Muñoz, Evelin Quilarque, Yalicia Carvajal, Luis G. González-Bruzual
Pesos Y Morfometría De Algunas Aves Del Nororiente De Venezuela / Body Mass And Morphometric Data Of Some Birds From Northeastern Venezuela, Gedio Marín, Jorge Muñoz, Evelin Quilarque, Yalicia Carvajal, Luis G. González-Bruzual
Revista Venezolana de Ornitología
Body mass and morphometric data among different bird species have been used in comparative studies of patterns of bird community organization. Also, the body mass of birds is essential in a wide variety of disciplines. In Neotropical countries few biometric studies related to birds have been reported; hence, the main objective of this study to provide the morphometric and body mass data of birds captured in xeric, deciduous and mesic understories habitats from northeastern Venezuela, over a ten year (2006-2016) period. From 90 bird species captured, 51 were measured and 39 had their body masses taken. These results could be …
La Dieta De Dos Thamnophilidae De Venezuela: La Choca Guayanesa Thamnomanes Caesius Y La Burujara Pizarreña Thamnomanes Ardesiacus / Diet Of Two Thamnophilidae From Venezuela: Cinereous Antshrike Thamnomanes Caesius And Dusky-Throated Antshrike Thamnomanes Ardesiacus, Tomás A. García, Vicky C. Malavé-Moreno
La Dieta De Dos Thamnophilidae De Venezuela: La Choca Guayanesa Thamnomanes Caesius Y La Burujara Pizarreña Thamnomanes Ardesiacus / Diet Of Two Thamnophilidae From Venezuela: Cinereous Antshrike Thamnomanes Caesius And Dusky-Throated Antshrike Thamnomanes Ardesiacus, Tomás A. García, Vicky C. Malavé-Moreno
Revista Venezolana de Ornitología
Con el objeto de conocer la dieta de dos aves insectívoras de Thamnophilidae, se realizaron análisis de contenido estomacal a 39 individuos de museo de la Choca Guayanesa Thamnomanes caesius y 28 de la Burujara Pizarreña T. ardesiacus, colectados en 21 localidades de los estados Bolívar y Amazonas de Venezuela. En las muestras se pudo determinar que Coleoptera, Orthoptera (Tettigonidae) e Hymenoptera (Formicidae) fueron los grupos taxonómicos con mayor importancia alimentaria para ambas especies. En la Choca Guayanesa, los Coleoptera representaron el 31,5% de su dieta, mientras que Orthoptera (Tettigonidae) el 4,9% e Hymenoptera (Formicidae) el 3,2%. Por su parte, …
Composición Y Riqueza Aviar De Un Área Urbana Adyacente Al Parque Nacional El Ávila (Waraira Repano), Caracas, Venezuela / Bird Richness And Composition Of An Urban Area Nearby El Ávila National Park (Waraira Repano), Caracas, Venezuela, Hugo Rodríguez-García
Revista Venezolana de Ornitología
Con el propósito de determinar la riqueza y composición de las aves diurnas en la sede de Fundación La Salle de Ciencias Naturales de Caracas, un área urbana limítrofe con el Parque Nacional El Ávila, se realizaron capturas con redes de neblina y observaciones entre enero de 2017 y marzo de 2018. Se capturaron 54 individuos de 19 especies, por lo que su riqueza resultó pobre. Sin embargo, se observaron otras 43 especies, lo que elevó la riqueza del área a 62 especies de 22 familias y 10 gremios alimentarios. Esto representa el 16% de las aves conocidas para Caracas …
Monitoreo Del Conoto Negro Psarocolius Decumanus En Un Ecosistema Urbano: Una Iniciativa De Ciencia Ciudadana En Caracas, Venezuela / Monitoring The Crested Oropendola Psarocolius Decumanus In An Urban Ecosystem: A Citizen Science Initiative In Caracas, Venezuela, Fernando Machado-Stredel, Ana M. F. Fernandes, Fernando Riera, Rafael Gianni, Adriana Rodríguez-Ferraro, Jorge Luis Pérez-Emán
Monitoreo Del Conoto Negro Psarocolius Decumanus En Un Ecosistema Urbano: Una Iniciativa De Ciencia Ciudadana En Caracas, Venezuela / Monitoring The Crested Oropendola Psarocolius Decumanus In An Urban Ecosystem: A Citizen Science Initiative In Caracas, Venezuela, Fernando Machado-Stredel, Ana M. F. Fernandes, Fernando Riera, Rafael Gianni, Adriana Rodríguez-Ferraro, Jorge Luis Pérez-Emán
Revista Venezolana de Ornitología
En 2016 se inició el proyecto “Conotos de Caracas”, una iniciativa de ciencia ciudadana que busca dar a conocer la situación del Conoto Negro Psarocolius decumanus en la capital de Venezuela. El Conoto Negro no parece haber sido un ave común en la ciudad de Caracas, pero en años recientes el número de registros de ocurrencia ha aumentado considerablemente. A través de un portal en línea (https://lbcaves.wixsite.com/conotosccs) se recibieron 652 reportes de individuos y/o colonias de la especie, realizados por 103 participantes desde enero de 2016 hasta marzo de 2019. La mayoría de los reportes fueron realizados en los municipios …
Notas Sobre Comportamiento Asociado A La Alimentación De Una Pareja Reproductora Del Gavilán Habado Rupornis Magnirostris En Un Área Urbana De Caracas, Venezuela / Notes About The Feeding Behavior In A Reproductive Couple Of The Roadside Hawk Rupornis Magnirostris Observed In An Urban Area Of Caracas, Venezuela, Eliana Blanco-Pérez
Revista Venezolana de Ornitología
The Roadside Hawk is a common bird of prey in Central and South America. Its general diet is relatively well known, but little is known about its diet and feeding behavior in urban areas. In this work, I describe the feeding routine, vocalizations, preys, and general behavior of a couple Roadside Hawks in El Valle, an urban area of Caracas, Venezuela, between March and May 2017. During eight weeks, 25 records were obtained. In most records, the Roadside Hawk was seen perched with a prey in its talons. At same time, it uttered a vocal sound. After 1–6 minutes, another …
Primeros Registros Documentados De La Reproducción Del Buzo Podilymbus Podiceps Y La Gallineta Pico De Plata Fulica Caribaea En El Estado Sucre, Región Nororiental De Venezuela / First Documented Records Of Breeding Activity In The Pied-Billed Grebe Podilymbus Podiceps And The Caribbean Coot Fulica Caribaea In Sucre State, Northeastern Venezuela, Gedio Marín, Jorge Muñoz, Jesús Bello
Primeros Registros Documentados De La Reproducción Del Buzo Podilymbus Podiceps Y La Gallineta Pico De Plata Fulica Caribaea En El Estado Sucre, Región Nororiental De Venezuela / First Documented Records Of Breeding Activity In The Pied-Billed Grebe Podilymbus Podiceps And The Caribbean Coot Fulica Caribaea In Sucre State, Northeastern Venezuela, Gedio Marín, Jorge Muñoz, Jesús Bello
Revista Venezolana de Ornitología
For the fi rst time, photographic documentation exposes adult individuals of the Pied-billed Grebe Podilymbus podiceps and the Caribbean Coot Fulica caribaea with their fl edglings in freshwater ponds of Península de Araya, Sucre state, Venezuela. The information collected represent an evidence of breeding activity in both species for the mentioned locality and Sucre state.
Nuevos Registros Del Colibrí Pecho Canela Glaucis Hirsutus En Los Llanos De Venezuela / New Records Of The Rufous-Breastead Hermit Glaucis Hirsutus In The Venezuelan Llanos, Tomás A. García, Daniela Escobar García, García Rodríguez-Ferraro
Nuevos Registros Del Colibrí Pecho Canela Glaucis Hirsutus En Los Llanos De Venezuela / New Records Of The Rufous-Breastead Hermit Glaucis Hirsutus In The Venezuelan Llanos, Tomás A. García, Daniela Escobar García, García Rodríguez-Ferraro
Revista Venezolana de Ornitología
The Rufous-breasted Hermit is a common hummingbird inhabiting lowland forests across the Neotropics. In Venezuela, there are very few records of the species in the central llanos. On November 2017, we captured one individual within Fundo Pecuario Masaguaral in the western portion of Guárico state, where the species was not previously reported. In order to update the distribution of the Rufousbreasted Hermit on the Venezuelan llanos, we reviewed the species records on museums and online databases. Additional to our record in Guárico state, we found 20 records of the species in Apure, Barinas, Cojedes and Portuguesa states; and even one …
Disponibilidad De Alimento Para El Colibrí Pechiazul Sternoclyta Cyanopectus (Trochilidae) En La Zona De Portachuelo, Parque Nacional Henri Pittier, Venezuela / Food Availability For The Violet-Chested Hummingbird Sternoclyta Cyanopectus (Trochilidae) In The Portachuelo Area, Henri Pittier National Park, Venezuela, Cristina Malpica-Piñeros, Miguel Lentino, Carlos Varela
Disponibilidad De Alimento Para El Colibrí Pechiazul Sternoclyta Cyanopectus (Trochilidae) En La Zona De Portachuelo, Parque Nacional Henri Pittier, Venezuela / Food Availability For The Violet-Chested Hummingbird Sternoclyta Cyanopectus (Trochilidae) In The Portachuelo Area, Henri Pittier National Park, Venezuela, Cristina Malpica-Piñeros, Miguel Lentino, Carlos Varela
Revista Venezolana de Ornitología
Con el propósito de describir la dieta y disponibilidad de alimento del Colibrí Pechiazul Sternoclyta cyanopectus en el área de Portachuelo, Parque Nacional Henri Pittier, estado Aragua, norte de Venezuela, se analizaron muestras de polen recolectadas en diferentes áreas de su pico. Asimismo, muestras de pollen de diferentes especies de plantas también fueron colectadas para hacer comparaciones. Se encontraron 12 palinomorfos distintos en los picos del Colibrí Pechiazul, propios de las familias Heliconiaceae, Acanthaceae, Costaceae, Bromeliaceae, Myrtaceae, Gesneriaceae y Zingiberaceae. No hubo diferencias significativas entre hembras y machos con respecto a la diversidad de la dieta, así como tampoco con …
Gis-Based Spatial And Temporal Analyses Of Motor Vehicle Crashes In The Atlanta Metropolitan Region 2017-2021, Heyward Stober, Jeong C. Seong
Gis-Based Spatial And Temporal Analyses Of Motor Vehicle Crashes In The Atlanta Metropolitan Region 2017-2021, Heyward Stober, Jeong C. Seong
The Geographical Bulletin
Motor vehicle crash analysis is among the most insightful metrics for public safety officials, researchers, and drivers. In this article, geographical information systems (GIS) tools were used to study the spatial and temporal trends of traffic crashes and fatal crashes. The methodology involves collecting spatial crash data over time and using computer-based analysis to overlay the road data against various spatial and temporal parameters in the Atlanta metropolitan region. Results show major crash hotspots in the region, such as the cites of Marietta, Kennesaw, and College Park. Hotspots tend to form on interstate highways, while smaller state highways have fewer …
Recovery Of Microtopography Following Prairie Restoration: Implications For Biodiversity Monitoring, Karli Cich, Scott Powell
Recovery Of Microtopography Following Prairie Restoration: Implications For Biodiversity Monitoring, Karli Cich, Scott Powell
The Geographical Bulletin
Tallgrass prairies are often restored from agricultural fields where the natural microtopography has long since been removed. Therefore, our study investigates the degree to which restored prairies recover microtopography. Differences in microtopography were measured using precise elevation data collected from LiDAR to compare differences in microtopography between crop fields, fallow fields, newer restored prairies, and older restored prairies. We also compared plant biodiversity indices between newer and older restored prairies using nested plot vegetation sampling. Our first research question is how microtopography differs between the sites. Our results show that older restored prairies had the most microtopographic variation, followed by …
Modeling The Impact Of Ocean Temperature Increases On The Distribution Of Seagrasses Around The Korean Peninsula Using A Machine Learning Technique, Jina Jang, Seohyeon Kim, Jeong Seong
Modeling The Impact Of Ocean Temperature Increases On The Distribution Of Seagrasses Around The Korean Peninsula Using A Machine Learning Technique, Jina Jang, Seohyeon Kim, Jeong Seong
The Geographical Bulletin
Seagrasses are important resources which form a vital part of the ocean ecosystem. They are also considered blue carbon because of their capability of sequestrating carbon. Seagrass distribution can be affected by many factors including ocean temperature. It is highly likely that recent climate change may increase ocean temperature significantly in East Asia and consequently alter seagrass distribution patterns. This study aims at predicting the impact of ocean temperature increases on seagrass habitats around the Korean Peninsula. Using the Maximum Entropy (MaxEnt) Model, seagrass habitat distributions were modeled when sea temperature rises by 1°C, 2°C, 3°C, and 4°C. Results show …
Predicting Cloud Fraction With Instantaneous Direct And Diffuse Shortwave Solar Irradiance, Jamison Lerma, Emily K. Blackaby, Maosi Chen, Sasha Madronich, Wei Gao
Predicting Cloud Fraction With Instantaneous Direct And Diffuse Shortwave Solar Irradiance, Jamison Lerma, Emily K. Blackaby, Maosi Chen, Sasha Madronich, Wei Gao
The Geographical Bulletin
The purpose of this study is to compare the different performances of three commonly used models (i.e., linear regression, random forest regression, and deep neural network (DNN)) to predict cloud fraction (CF) using ground-based shortwave solar radiation measurements and analyze the importance of the input features. The CF data are obtained from the Surface Radiation Budget (SURFRAD) and the Atmospheric Radiation Measurement (ARM) and the irradiance data from the USDA UV-B Monitoring and Research Program. The study finds that CF of opaque and total clouds can be best predicted using both Random Forest Regression and DNN with the validation R2 …