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Science Signaling - Call For Papers

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Science 19 October 2001:
Vol. 294. no. 5542, p. 471
DOI: 10.1126/science.294.5542.471a

Technical Comments

Variation in Food Supply, Time of Breeding, and Energy Expenditure in Birds

Simon Verhulst Joost M. Tinbergen

Zoological Laboratory
University of Groningen
P.O. Box 14, 9750 AA
Haren, Netherlands
E-mail: s.verhulst{at}biol.rug.nl


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Science. ISSN 0036-8075 (print), 1095-9203 (online)