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dc.contributor.author
Gorosito, Cristian Andrés
dc.contributor.author
Gonda, Héctor Eduardo
dc.contributor.author
Cueto, Víctor
dc.date.available
2018-08-21T17:44:16Z
dc.date.issued
2016-12
dc.identifier.citation
Gorosito, Cristian Andrés; Gonda, Héctor Eduardo; Cueto, Víctor; Beak deformities in north Patagonian birds; Neotropical Ornithological Society; Ornitología Neotropical; 27; 12-2016; 289-295
dc.identifier.issn
1075-4377
dc.identifier.uri
http://hdl.handle.net/11336/56350
dc.description.abstract
Within the last decade, many individuals of several bird species with abnormal and strange beaks deformations<br />have been reported from Alaska, United States, and from United Kingdom and Ireland. Different forms of beak<br />deformities were observed, but the causes of these abnormalities are unknown. We report beak deformities in two<br />species of birds in northwestern Patagonia, Argentina: Austral Thrush (Turdus falcklandii) and Patagonian Mockingbird<br />(Mimus patagonicus). Between 2013 and 2016, we captured individuals of White‐crested Elaenia (Elaenia albiceps, N<br />= 305), Rufous‐collared Sparrow (Zonotrichia capensis, N = 119), Austral Thrush (N = 100), Black‐chinned Siskin (Spinus<br />barbata, N = 64), Patagonian Sierra‐Finch (Phrygilus patagonicus, N = 48) and Gray‐hooded Sierra‐Finch (Phrygilus<br />gayi, N = 40) in surroundings of Esquel city, located in western Patagonia, Chubut province, and quantified the prevalence<br />of beak deformities. Only adult Austral Thrushes (5 out of 78; 6.41%) showed abnormal beaks. Neither juvenile<br />thrushes (N = 22) nor the other five species showed beak deformations. Austral Thrushes with beak deformations<br />were also observed and photographed (but not captured) in other areas around the city. We also photographed one<br />Patagonian Mockingbird with an abnormal beak near Las Plumas Village, Chubut province. Beak deformities varied<br />from light to severe, and also in their form. Most of them were characterized by an elongated and often decurved<br />upper mandible, producing an overbite; in other individuals both mandibles were elongated and sometimes crossed<br />or had a pronounced gap. Most affected birds showed signs of improper preening, and one of them was malnourished.<br />All of these characteristics are similar to those described for birds affected by avian keratin disorder in North<br />America. Further research is needed to detect potential presence of other species with beak deformities in Patagonia,<br />to find out possible causes of such deformities, and to determine whether these anomalies are associated with natural<br />habitats or urban environments.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Neotropical Ornithological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aves
dc.subject
Morfologia
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Otras Ciencias Biológicas
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Beak deformities in north Patagonian birds
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-21T12:55:57Z
dc.journal.volume
27
dc.journal.pagination
289-295
dc.journal.pais
Canadá
dc.description.fil
Fil: Gorosito, Cristian Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
dc.description.fil
Fil: Gonda, Héctor Eduardo. Centro de Investigación y Extensión Forestal Andino Patagónico; Argentina. Universidad Nacional de la Patagonia "san Juan Bosco". Facultad de Ingeniería - Sede Esquel; Argentina
dc.description.fil
Fil: Cueto, Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagóica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
dc.journal.title
Ornitología Neotropical
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.sfu.ca/ornneo/index.php/ornneo/article/view/181
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