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Urban Roost of Wintering Barn Swallows Hirundo rustica in Aveiro, Portugal

Nus, Tim Van and Neto, Júlio M. LU (2017) In Ardea 105(1). p.73-78
Abstract

We describe the finding of an urban roost of wintering Barn Swallows Hirundo rustica in Aveiro, Portugal, which remained stable with c.150 individuals from at least early December to mid-January 2015/16. The stability in numbers and the occurrence of freshly-shed primary feathers below the roost strongly indicate that these were indeed wintering birds that completed their annual moult and suffered a relatively low mortality during this period. The number of roosting Barn Swallows steeply declined in late January, coinciding with the appearance of singing males in the area and the arrival of numerous migrants from Africa to Portugal. The site characteristics and roosting behaviour are described, and the potential advantages of urban... (More)

We describe the finding of an urban roost of wintering Barn Swallows Hirundo rustica in Aveiro, Portugal, which remained stable with c.150 individuals from at least early December to mid-January 2015/16. The stability in numbers and the occurrence of freshly-shed primary feathers below the roost strongly indicate that these were indeed wintering birds that completed their annual moult and suffered a relatively low mortality during this period. The number of roosting Barn Swallows steeply declined in late January, coinciding with the appearance of singing males in the area and the arrival of numerous migrants from Africa to Portugal. The site characteristics and roosting behaviour are described, and the potential advantages of urban roosting discussed. Although this particular winter was unusually mild, observations indicate that this roost may have been present in previous years, and others may occur elsewhere in the Iberian Peninsula.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
climate change, migration, roosting behaviour, urban habitat
in
Ardea
volume
105
issue
1
pages
6 pages
publisher
Nederlandse Ornithologische Unie
external identifiers
  • scopus:85019415671
ISSN
0373-2266
DOI
10.5253/arde.v105i1.a6
language
English
LU publication?
yes
id
93b7a236-78e3-4915-b14b-f04c2854b433
date added to LUP
2017-06-13 13:27:38
date last changed
2017-06-13 13:27:38
@article{93b7a236-78e3-4915-b14b-f04c2854b433,
  abstract     = {<p>We describe the finding of an urban roost of wintering Barn Swallows Hirundo rustica in Aveiro, Portugal, which remained stable with c.150 individuals from at least early December to mid-January 2015/16. The stability in numbers and the occurrence of freshly-shed primary feathers below the roost strongly indicate that these were indeed wintering birds that completed their annual moult and suffered a relatively low mortality during this period. The number of roosting Barn Swallows steeply declined in late January, coinciding with the appearance of singing males in the area and the arrival of numerous migrants from Africa to Portugal. The site characteristics and roosting behaviour are described, and the potential advantages of urban roosting discussed. Although this particular winter was unusually mild, observations indicate that this roost may have been present in previous years, and others may occur elsewhere in the Iberian Peninsula.</p>},
  author       = {Nus, Tim Van and Neto, Júlio M.},
  issn         = {0373-2266},
  keyword      = {climate change,migration,roosting behaviour,urban habitat},
  language     = {eng},
  month        = {04},
  number       = {1},
  pages        = {73--78},
  publisher    = {Nederlandse Ornithologische Unie},
  series       = {Ardea},
  title        = {Urban Roost of Wintering Barn Swallows Hirundo rustica in Aveiro, Portugal},
  url          = {http://dx.doi.org/10.5253/arde.v105i1.a6},
  volume       = {105},
  year         = {2017},
}