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How do Robins Erithacus rubecula resident in Iberia respond to seasonal flooding by conspecific migrants?

Campos, Ana R.; Catry, Paulo; Tenreiro, Paulo; Neto, Julio LU ; Pereira, António C.; Brito, Rui; Cardoso, Helder; Ramos, Jaime A.; Bearhop, Stuart and Newton, Jason (2011) In Bird Study 58(4). p.435-442
Abstract
Capsule The majority of Robins in Iberia are sedentary and stay in their nesting areas despite the pre- sumed increased competition that results from the seasonal flooding of the area by conspecific migrants. Aims To evaluate if Robins in Iberia are displaced from their nesting areas by the presence of large num- bers of competitors originating from higher latitudes.

Methods Data from constant effort ringing sites were used to estimate the proportion of Robins that are strictly sedentary and the seasonal variation in Robin numbers. Hydrogen stable isotope ratios (d2H) in feathers, and sex ratios determined through molecular techniques, allowed an insight into the numerical importance of invading Robins from higher... (More)
Capsule The majority of Robins in Iberia are sedentary and stay in their nesting areas despite the pre- sumed increased competition that results from the seasonal flooding of the area by conspecific migrants. Aims To evaluate if Robins in Iberia are displaced from their nesting areas by the presence of large num- bers of competitors originating from higher latitudes.

Methods Data from constant effort ringing sites were used to estimate the proportion of Robins that are strictly sedentary and the seasonal variation in Robin numbers. Hydrogen stable isotope ratios (d2H) in feathers, and sex ratios determined through molecular techniques, allowed an insight into the numerical importance of invading Robins from higher latitudes.

Results Robins were more numerous outside the breeding season, with clear influxes in autumn. Around half of the locally nesting Robins were captured during winter, indicating they are truly sedentary. d2H in feathers suggests that a wide mixture of Robins from all European latitudes were present in winter, and these data, together with sex ratios, suggest that there may be similar numbers of local and foreign individ- uals in winter at the main study site.

Conclusion Despite the occupation of their range by migrants, local birds are largely sedentary. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Bird Study
volume
58
issue
4
pages
435 - 442
publisher
British Trust for Ornithology
external identifiers
  • wos:000298496900006
  • scopus:84857434576
ISSN
0006-3657
DOI
10.1080/00063657.2011.603291
language
English
LU publication?
yes
id
3c1f3e6d-d6f5-4890-a990-7c4d877a94c3 (old id 2226086)
date added to LUP
2011-12-21 12:35:15
date last changed
2017-01-01 03:55:18
@article{3c1f3e6d-d6f5-4890-a990-7c4d877a94c3,
  abstract     = {Capsule The majority of Robins in Iberia are sedentary and stay in their nesting areas despite the pre- sumed increased competition that results from the seasonal flooding of the area by conspecific migrants. Aims To evaluate if Robins in Iberia are displaced from their nesting areas by the presence of large num- bers of competitors originating from higher latitudes.<br/><br>
Methods Data from constant effort ringing sites were used to estimate the proportion of Robins that are strictly sedentary and the seasonal variation in Robin numbers. Hydrogen stable isotope ratios (d2H) in feathers, and sex ratios determined through molecular techniques, allowed an insight into the numerical importance of invading Robins from higher latitudes.<br/><br>
Results Robins were more numerous outside the breeding season, with clear influxes in autumn. Around half of the locally nesting Robins were captured during winter, indicating they are truly sedentary. d2H in feathers suggests that a wide mixture of Robins from all European latitudes were present in winter, and these data, together with sex ratios, suggest that there may be similar numbers of local and foreign individ- uals in winter at the main study site.<br/><br>
Conclusion Despite the occupation of their range by migrants, local birds are largely sedentary.},
  author       = {Campos, Ana R. and Catry, Paulo and Tenreiro, Paulo and Neto, Julio and Pereira, António C. and Brito, Rui and Cardoso, Helder and Ramos, Jaime A. and Bearhop, Stuart and Newton, Jason},
  issn         = {0006-3657},
  language     = {eng},
  number       = {4},
  pages        = {435--442},
  publisher    = {British Trust for Ornithology},
  series       = {Bird Study},
  title        = {How do Robins Erithacus rubecula resident in Iberia respond to seasonal flooding by conspecific migrants?},
  url          = {http://dx.doi.org/10.1080/00063657.2011.603291},
  volume       = {58},
  year         = {2011},
}