Advanced

Do adult and juvenile dunlins Calidris alpina form randomly mixed flocks during fall migration?

Henningsson, Sara LU and Karlsson, Håkan LU (2009) In Journal of Avian Biology1994-01-01+01:00 40(6). p.646-649
Abstract
Many northerly breeding shorebird species show a separation in timing of adult and juvenile migration. If, in addition to genetic control of migration, learning from experienced conspecifics is advantageous, juveniles should join adult birds during their first fall migration when possible. We here present a method to test if juveniles mix with adults during the period of overlap during southward migration, using dunlin Calidris alpina migrating over southern Sweden as an example. While taking timing differences between age classes into account, we compare flock compositions observed in the field against randomized flock-compositions based on the pool of available individuals derived from the field data. During both the early, the... (More)
Many northerly breeding shorebird species show a separation in timing of adult and juvenile migration. If, in addition to genetic control of migration, learning from experienced conspecifics is advantageous, juveniles should join adult birds during their first fall migration when possible. We here present a method to test if juveniles mix with adults during the period of overlap during southward migration, using dunlin Calidris alpina migrating over southern Sweden as an example. While taking timing differences between age classes into account, we compare flock compositions observed in the field against randomized flock-compositions based on the pool of available individuals derived from the field data. During both the early, the adult-dominated, and later, the juvenile-dominated, part of the season, age classes segregate. Applied to other shorebird species, our method could be used in a comparative sense to evaluate the potential for social learning of migration routes. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Avian Biology1994-01-01+01:00
volume
40
issue
6
pages
646 - 649
publisher
Federation of European Neuroscience Societies and Blackwell Publishing Ltd
external identifiers
  • wos:000272452500010
  • scopus:72249088993
ISSN
0908-8857
DOI
10.1111/j.1600-048X.2009.04598.x
language
English
LU publication?
yes
id
56df5d93-dc95-44ce-8642-b7a234445d03 (old id 1533492)
date added to LUP
2010-01-27 16:27:48
date last changed
2017-02-19 03:28:39
@article{56df5d93-dc95-44ce-8642-b7a234445d03,
  abstract     = {Many northerly breeding shorebird species show a separation in timing of adult and juvenile migration. If, in addition to genetic control of migration, learning from experienced conspecifics is advantageous, juveniles should join adult birds during their first fall migration when possible. We here present a method to test if juveniles mix with adults during the period of overlap during southward migration, using dunlin Calidris alpina migrating over southern Sweden as an example. While taking timing differences between age classes into account, we compare flock compositions observed in the field against randomized flock-compositions based on the pool of available individuals derived from the field data. During both the early, the adult-dominated, and later, the juvenile-dominated, part of the season, age classes segregate. Applied to other shorebird species, our method could be used in a comparative sense to evaluate the potential for social learning of migration routes.},
  author       = {Henningsson, Sara and Karlsson, Håkan},
  issn         = {0908-8857},
  language     = {eng},
  number       = {6},
  pages        = {646--649},
  publisher    = {Federation of European Neuroscience Societies and Blackwell Publishing Ltd},
  series       = {Journal of Avian Biology1994-01-01+01:00},
  title        = {Do adult and juvenile dunlins Calidris alpina form randomly mixed flocks during fall migration?},
  url          = {http://dx.doi.org/10.1111/j.1600-048X.2009.04598.x},
  volume       = {40},
  year         = {2009},
}