Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes
- Autores
- Wilson, David B.
- Año de publicación
- 1979
- Idioma
- español castellano
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- These observations were made in Estancia Curupicay, a cattle ranch, some 12 miles from Mercedes, and situated nearly in the centre of the province of Corrientes. The ranch consists of open pasture land, with few native trees except along the streams. It has many exotics such as casuarinas, Eucalyptus and paraísos planted round the administration buildings and in scattered groups to give shade to the cattle. The Shiny Cowbird (Molothrus bonariensis), is abundant in all the district. The Crowned Slaty-Flycatcher (Empidonomus aurantio-atro-cristatus ), was recorded once feeding a fledgling Shiny Cowbird (7 January 1975). The Hornero (Fumarius rufus ), is also here in numbers, nine nests being the aproximate number built in the gardens of the ranch each year. Horneros have been observed feeding young Cowbirds since 1973, in November of each year. Three pairs were seen with young parasites each spring, with two or with one, but never with any of their own brood and the young Cowbird at the same time. Great Kiskadees ( Pitangus sulphuratus ), have also been seen feeding young Cowbirds, so it would seems that covered neasts are no protection against brood-parasites. I have actually seen a female Cowbird go into an Horneros nest on two oceasions, and found a fallen Horneros nest with broken eggs of the owners and one Cowbird´s egg that was mottled and typical. The Rufos-collared Sparrow ( Zonotrichia capensis ), in common in the gardens, and nest in the privet hedges, but I have never seen them followed by young Cowbirds. The Bay winged Cowbirds come to my bird table, in company with young Screaming Cowbirds, but I have never seen a young Shiny Cowbird in their small flocks. So it would seen that brood-parasitism by the Shiny Cowbird on the Hornero is relatively common in the province of Corrientes, also on the Great Kiskadee, and that birds victimized vary according the zone. The species being different in the province of Buenos Aires to the ones that are preferred here.
- Fuente
- Hornero (en línea) 1979;01(012):069-071
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc/2.5/ar
- Repositorio
- Institución
- Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
- OAI Identificador
- hornero:hornero_v012_n01_p069
Ver los metadatos del registro completo
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1896 |
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Biblioteca Digital (UBA-FCEN) |
spelling |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de CorrientesWilson, David B.These observations were made in Estancia Curupicay, a cattle ranch, some 12 miles from Mercedes, and situated nearly in the centre of the province of Corrientes. The ranch consists of open pasture land, with few native trees except along the streams. It has many exotics such as casuarinas, Eucalyptus and paraísos planted round the administration buildings and in scattered groups to give shade to the cattle. The Shiny Cowbird (Molothrus bonariensis), is abundant in all the district. The Crowned Slaty-Flycatcher (Empidonomus aurantio-atro-cristatus ), was recorded once feeding a fledgling Shiny Cowbird (7 January 1975). The Hornero (Fumarius rufus ), is also here in numbers, nine nests being the aproximate number built in the gardens of the ranch each year. Horneros have been observed feeding young Cowbirds since 1973, in November of each year. Three pairs were seen with young parasites each spring, with two or with one, but never with any of their own brood and the young Cowbird at the same time. Great Kiskadees ( Pitangus sulphuratus ), have also been seen feeding young Cowbirds, so it would seems that covered neasts are no protection against brood-parasites. I have actually seen a female Cowbird go into an Horneros nest on two oceasions, and found a fallen Horneros nest with broken eggs of the owners and one Cowbird´s egg that was mottled and typical. The Rufos-collared Sparrow ( Zonotrichia capensis ), in common in the gardens, and nest in the privet hedges, but I have never seen them followed by young Cowbirds. The Bay winged Cowbirds come to my bird table, in company with young Screaming Cowbirds, but I have never seen a young Shiny Cowbird in their small flocks. So it would seen that brood-parasitism by the Shiny Cowbird on the Hornero is relatively common in the province of Corrientes, also on the Great Kiskadee, and that birds victimized vary according the zone. The species being different in the province of Buenos Aires to the ones that are preferred here.Aves Argentinas. Asociación Ornitológica del Plata1979-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://hdl.handle.net/20.500.12110/hornero_v012_n01_p069Hornero (en línea) 1979;01(012):069-071reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENspainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar2025-09-29T13:43:26Zhornero:hornero_v012_n01_p069Institucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:43:27.471Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse |
dc.title.none.fl_str_mv |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
title |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
spellingShingle |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes Wilson, David B. |
title_short |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
title_full |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
title_fullStr |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
title_full_unstemmed |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
title_sort |
Nota sobre casos de parasitismo del Renegrido (Molothrus bonariensis) sobre varios Passeriformes observados en la provincia de Corrientes |
dc.creator.none.fl_str_mv |
Wilson, David B. |
author |
Wilson, David B. |
author_facet |
Wilson, David B. |
author_role |
author |
dc.description.none.fl_txt_mv |
These observations were made in Estancia Curupicay, a cattle ranch, some 12 miles from Mercedes, and situated nearly in the centre of the province of Corrientes. The ranch consists of open pasture land, with few native trees except along the streams. It has many exotics such as casuarinas, Eucalyptus and paraísos planted round the administration buildings and in scattered groups to give shade to the cattle. The Shiny Cowbird (Molothrus bonariensis), is abundant in all the district. The Crowned Slaty-Flycatcher (Empidonomus aurantio-atro-cristatus ), was recorded once feeding a fledgling Shiny Cowbird (7 January 1975). The Hornero (Fumarius rufus ), is also here in numbers, nine nests being the aproximate number built in the gardens of the ranch each year. Horneros have been observed feeding young Cowbirds since 1973, in November of each year. Three pairs were seen with young parasites each spring, with two or with one, but never with any of their own brood and the young Cowbird at the same time. Great Kiskadees ( Pitangus sulphuratus ), have also been seen feeding young Cowbirds, so it would seems that covered neasts are no protection against brood-parasites. I have actually seen a female Cowbird go into an Horneros nest on two oceasions, and found a fallen Horneros nest with broken eggs of the owners and one Cowbird´s egg that was mottled and typical. The Rufos-collared Sparrow ( Zonotrichia capensis ), in common in the gardens, and nest in the privet hedges, but I have never seen them followed by young Cowbirds. The Bay winged Cowbirds come to my bird table, in company with young Screaming Cowbirds, but I have never seen a young Shiny Cowbird in their small flocks. So it would seen that brood-parasitism by the Shiny Cowbird on the Hornero is relatively common in the province of Corrientes, also on the Great Kiskadee, and that birds victimized vary according the zone. The species being different in the province of Buenos Aires to the ones that are preferred here. |
description |
These observations were made in Estancia Curupicay, a cattle ranch, some 12 miles from Mercedes, and situated nearly in the centre of the province of Corrientes. The ranch consists of open pasture land, with few native trees except along the streams. It has many exotics such as casuarinas, Eucalyptus and paraísos planted round the administration buildings and in scattered groups to give shade to the cattle. The Shiny Cowbird (Molothrus bonariensis), is abundant in all the district. The Crowned Slaty-Flycatcher (Empidonomus aurantio-atro-cristatus ), was recorded once feeding a fledgling Shiny Cowbird (7 January 1975). The Hornero (Fumarius rufus ), is also here in numbers, nine nests being the aproximate number built in the gardens of the ranch each year. Horneros have been observed feeding young Cowbirds since 1973, in November of each year. Three pairs were seen with young parasites each spring, with two or with one, but never with any of their own brood and the young Cowbird at the same time. Great Kiskadees ( Pitangus sulphuratus ), have also been seen feeding young Cowbirds, so it would seems that covered neasts are no protection against brood-parasites. I have actually seen a female Cowbird go into an Horneros nest on two oceasions, and found a fallen Horneros nest with broken eggs of the owners and one Cowbird´s egg that was mottled and typical. The Rufos-collared Sparrow ( Zonotrichia capensis ), in common in the gardens, and nest in the privet hedges, but I have never seen them followed by young Cowbirds. The Bay winged Cowbirds come to my bird table, in company with young Screaming Cowbirds, but I have never seen a young Shiny Cowbird in their small flocks. So it would seen that brood-parasitism by the Shiny Cowbird on the Hornero is relatively common in the province of Corrientes, also on the Great Kiskadee, and that birds victimized vary according the zone. The species being different in the province of Buenos Aires to the ones that are preferred here. |
publishDate |
1979 |
dc.date.none.fl_str_mv |
1979-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.12110/hornero_v012_n01_p069 |
url |
https://hdl.handle.net/20.500.12110/hornero_v012_n01_p069 |
dc.language.none.fl_str_mv |
spa |
language |
spa |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc/2.5/ar |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Aves Argentinas. Asociación Ornitológica del Plata |
publisher.none.fl_str_mv |
Aves Argentinas. Asociación Ornitológica del Plata |
dc.source.none.fl_str_mv |
Hornero (en línea) 1979;01(012):069-071 reponame:Biblioteca Digital (UBA-FCEN) instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales instacron:UBA-FCEN |
reponame_str |
Biblioteca Digital (UBA-FCEN) |
collection |
Biblioteca Digital (UBA-FCEN) |
instname_str |
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales |
instacron_str |
UBA-FCEN |
institution |
UBA-FCEN |
repository.name.fl_str_mv |
Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales |
repository.mail.fl_str_mv |
ana@bl.fcen.uba.ar |
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1844618750281646080 |
score |
13.070432 |