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Scaling of migration and the annual cycle of birds

Hedenström, Anders LU (2006) In Ardea 94(3). p.399-408
Abstract
In a seasonally fluctuating environment migratory birds face decisions relating to how to schedule their main life-history activities, i.e. breeding, moult and migration. The time required to complete any one of these depends on overall size. In this paper I derive scaling functions about how time required for breeding, moult and migration depends on body mass. The sum of these increases with increasing body mass with a critical mass where the duration of non-overlapping breeding, moult and migration is equal to one year. Beyond this mass one or more of the processes must be modified. Large species may refrain from annual breeding and skip years without breeding. The replacement of one set of feathers may also take more than one year, or... (More)
In a seasonally fluctuating environment migratory birds face decisions relating to how to schedule their main life-history activities, i.e. breeding, moult and migration. The time required to complete any one of these depends on overall size. In this paper I derive scaling functions about how time required for breeding, moult and migration depends on body mass. The sum of these increases with increasing body mass with a critical mass where the duration of non-overlapping breeding, moult and migration is equal to one year. Beyond this mass one or more of the processes must be modified. Large species may refrain from annual breeding and skip years without breeding. The replacement of one set of feathers may also take more than one year, or in long-distance migrants the timing of moult is shifted from a post-breeding moult before autumn migration to a post-migration moult in the wintering area. Different adaptations for efficient migration are also discussed. Finally, I use a simple graphical model to derive a condition for when overloading fuel at the final stopover site is worthwhile, leading to arrival at the breeding site with surplus energy that may be used as capital for breeding. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
capital-income breeding, migratory decisions, allometric relationships
in
Ardea
volume
94
issue
3
pages
399 - 408
publisher
Nederlandse Ornithologische Unie
external identifiers
  • wos:000246455100009
  • scopus:33645815426
ISSN
0373-2266
language
English
LU publication?
yes
id
97407c9f-abe1-4dec-b6a6-358e6b341ab5 (old id 659717)
date added to LUP
2016-04-01 17:09:59
date last changed
2020-09-23 05:30:47
@article{97407c9f-abe1-4dec-b6a6-358e6b341ab5,
  abstract     = {In a seasonally fluctuating environment migratory birds face decisions relating to how to schedule their main life-history activities, i.e. breeding, moult and migration. The time required to complete any one of these depends on overall size. In this paper I derive scaling functions about how time required for breeding, moult and migration depends on body mass. The sum of these increases with increasing body mass with a critical mass where the duration of non-overlapping breeding, moult and migration is equal to one year. Beyond this mass one or more of the processes must be modified. Large species may refrain from annual breeding and skip years without breeding. The replacement of one set of feathers may also take more than one year, or in long-distance migrants the timing of moult is shifted from a post-breeding moult before autumn migration to a post-migration moult in the wintering area. Different adaptations for efficient migration are also discussed. Finally, I use a simple graphical model to derive a condition for when overloading fuel at the final stopover site is worthwhile, leading to arrival at the breeding site with surplus energy that may be used as capital for breeding.},
  author       = {Hedenström, Anders},
  issn         = {0373-2266},
  language     = {eng},
  number       = {3},
  pages        = {399--408},
  publisher    = {Nederlandse Ornithologische Unie},
  series       = {Ardea},
  title        = {Scaling of migration and the annual cycle of birds},
  volume       = {94},
  year         = {2006},
}