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To walk or to fly? How birds choose among foraging modes.

Abstract:

We test the predictive value of the main energetic currencies used in foraging theory using starlings that choose between two foraging modes (walking versus flying). Walking is low-cost, low-yield, whereas flying is the opposite. We fixed experimentally, at 11 different values, the amount of flight required to get one food reward, and for each flight cost value, we titrated the amount of walking until the birds showed indifference between foraging modes. We then compared the indifference poin...

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Publication status:
Published

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Publisher copy:
10.1073/pnas.98.3.1089

Authors


Bautista, LM More by this author
Tinbergen, J More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Zoology
Journal:
Proceedings of the National Academy of Sciences of the United States of America
Volume:
98
Issue:
3
Pages:
1089-1094
Publication date:
2001-01-05
DOI:
EISSN:
1091-6490
ISSN:
0027-8424
URN:
uuid:0128461b-918e-44d4-911a-31387e9fbe8f
Source identifiers:
209314
Local pid:
pubs:209314

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