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Animal Movement Across Scales$
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Lars-Anders Hansson and Susanne Åkesson

Print publication date: 2014

Print ISBN-13: 9780199677184

Published to Oxford Scholarship Online: November 2014

DOI: 10.1093/acprof:oso/9780199677184.001.0001

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Migration and flight strategies in animals: new insights from tracking migratory journeys

Migration and flight strategies in animals: new insights from tracking migratory journeys

Chapter:
(p.73) Chapter 5 Migration and flight strategies in animals: new insights from tracking migratory journeys
Source:
Animal Movement Across Scales
Author(s):

Anders Hedenström

Åke Lindström

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199677184.003.0005

In this chapter, recent and compelling results about migration in birds, bats, and insects are put in perspective with respect to optimal migration theory. Animals that perform seasonal long-distance migrations using flight can select to migrate according to alternative strategies. Which strategy is favoured depends on the underlying selection pressure, e.g. whether an animal strives to minimize the energy cost of migration, to maximize the travel rate, or to maximize the survival, but also on ecological factors such as the distribution of food and suitable habitats along the flight route. With the rapid technological development and miniaturization of tracking devices such as light-sensitive geolocators, researchers can now get data on whole-year migrations also from relatively small migrants. With light-weight radio transmitters even insects can be tracked for at least a part of their migratory journeys.

Keywords:   migration speed, geolocator, fuel load, time minimization, bird, bat, insect

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