Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil

Pygochelidon cyanoleuca is a common species, but little is known about its biology and life history in the urban environment of southeastern Brazil. The objective of this study was to monitor the reproduction of the species in this environment. We determined the total number of nests, nesting peak,...

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Main Authors: Zélia da Paz Pereira, Celine Melo
Format: Article
Language:English
Published: Universidade Federal de Santa Catarina 2010-09-01
Series:Biotemas
Subjects:
Online Access:http://www.biotemas.ufsc.br/volumes/pdf/volume233/117a123.pdf
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author Zélia da Paz Pereira
Celine Melo
author_facet Zélia da Paz Pereira
Celine Melo
author_sort Zélia da Paz Pereira
collection DOAJ
description Pygochelidon cyanoleuca is a common species, but little is known about its biology and life history in the urban environment of southeastern Brazil. The objective of this study was to monitor the reproduction of the species in this environment. We determined the total number of nests, nesting peak, construction site, shape, composition and distribution pattern of nests, and the success and possible causes of reproductive failure. The study was conducted between July and December 2007, in the hall of the library of the Federal University of Uberlândia in Uberlândia, Minas Gerais, Brazil. Nests were screened in spinning gutters and fixtures in the ceiling of the hall. We found 33 nests, of which 31 were active. Two nesting peaks were observed (August and November). Most nests had a platform shape. The pattern of distribution was aggregate. 19.4% of the nests were successful. The causes of failure were predation and unviable eggs. Pygochelidon cyanoleuca was reasonably successful and was able to make use of the structure of the roof of the library to build its nests. However, the high frequency of unviable eggs underscores the importance of studies on the potential effects of urbanization on birds and other organisms of the Cerrado and other Brazilian regions.
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spelling doaj.art-81da912ed63b487194162d278ae0aee22022-12-21T19:17:54ZengUniversidade Federal de Santa CatarinaBiotemas0103-16432010-09-01233117123Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern BrazilZélia da Paz PereiraCeline MeloPygochelidon cyanoleuca is a common species, but little is known about its biology and life history in the urban environment of southeastern Brazil. The objective of this study was to monitor the reproduction of the species in this environment. We determined the total number of nests, nesting peak, construction site, shape, composition and distribution pattern of nests, and the success and possible causes of reproductive failure. The study was conducted between July and December 2007, in the hall of the library of the Federal University of Uberlândia in Uberlândia, Minas Gerais, Brazil. Nests were screened in spinning gutters and fixtures in the ceiling of the hall. We found 33 nests, of which 31 were active. Two nesting peaks were observed (August and November). Most nests had a platform shape. The pattern of distribution was aggregate. 19.4% of the nests were successful. The causes of failure were predation and unviable eggs. Pygochelidon cyanoleuca was reasonably successful and was able to make use of the structure of the roof of the library to build its nests. However, the high frequency of unviable eggs underscores the importance of studies on the potential effects of urbanization on birds and other organisms of the Cerrado and other Brazilian regions.http://www.biotemas.ufsc.br/volumes/pdf/volume233/117a123.pdfaggregate distributionreproductive successunviable eggs
spellingShingle Zélia da Paz Pereira
Celine Melo
Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
Biotemas
aggregate distribution
reproductive success
unviable eggs
title Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
title_full Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
title_fullStr Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
title_full_unstemmed Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
title_short Breeding of the blue-and-white swallow (Pygochelidon cyanoleuca) in the urban environment of southeastern Brazil
title_sort breeding of the blue and white swallow pygochelidon cyanoleuca in the urban environment of southeastern brazil
topic aggregate distribution
reproductive success
unviable eggs
url http://www.biotemas.ufsc.br/volumes/pdf/volume233/117a123.pdf
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