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Animal MigrationA Synthesis$
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E.J. Milner-Gulland, John M. Fryxell, and Anthony R.E. Sinclair

Print publication date: 2011

Print ISBN-13: 9780199568994

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199568994.001.0001

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Cues and decision rules in animal migration

Cues and decision rules in animal migration

Chapter:
(p.68) Chapter 6 Cues and decision rules in animal migration
Source:
Animal Migration
Author(s):

Silke Bauer

Bart A. Nolet

Jarl Giske

Jason W. Chapman

Susanne Åkesson

Anders Hedenström

John M. Fryxell

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199568994.003.0006

Animals face many challenges during migration, including ‘where to go’ and ‘when to go’, for which migrants derive relevant information from proximate external (environmental) and internal (physiological) cues. This chapter synthesises the cues and decision rules in the phases of migration for the major migratory taxa. It makes some preliminary generalisations concerning the similarities and differences of the cues used across taxa and phases of migration. For instance, preparations for migration involve entrainment to time of the year and, consequently, photoperiod appears to be a ubiquitous cue. Furthermore, preparations often include changes in the body, and once these are accomplished, an internal cue indicates readiness to depart. The chapter concludes that much could be learned by overcoming taxonomic borders, identifying similarities and differences in the various migration types, and integrating theoretical and empirical efforts.

Keywords:   navigation, orientation, phenology, photoperiod, internal signals, social transmission

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