Abstract
SMALL birds increase their fat reserves in winter as insurance against reduced or unpredictable food supplies1: fat is accumulated daily from feeding and utilized overnight2. Field observations indicate that birds often maintain smaller reserves than expected2, which implies that there is a cost of being fat3. One such cost could be that an increased fat load reduces manoeuvrability, thus increasing the risk of predation3,4. Here we demonstrate a link between fat reserves and predation risk by describing changes in body mass (roughly equivalent to fat reserves) that have occurred in British populations of the great tit, Parus major since 1950, a period when the numbers of its principal predator, the spar-rowhawk Accipiter nisus, changed markedly. Furthermore, these changes resulted from individual tits adjusting their mass, rather than from the selection of heavier great tits by hawks.
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References
Blem, C. R. Curr. Orn. 7, 59–114 (1990).
Gosler, A. G. J. Anim. Ecol. (in the press).
Witter, M. S. & Cuthill, I. C. Phil Trans. R. Soc. Lond. B 340, 73–92 (1993).
McNamara, J. M. & Houston, A. I. Acta biotheor. 38, 37–61 (1990).
Gosler, A. G. The Great Tit (Hamlyn, London, 1993).
Perrins, C. M. British Tits (Collins, London, 1979).
McCleery, R. H. & Perrins, C. M. in Bird Population Studies (eds Perrins, C. M., Lebreton, J.-D. & Hirons, G. J. M.) 129–147 (Oxford Univ. Press, 1991).
Newton, I. The Sparrowhawk (Poyser, Calton. 1986).
Newton, I. in The New Atlas of Breeding Birds In Britain ana Ireland: 1988–91 (eds Gibbons, D. W., Reid, J. B. & Chapman, R. A.) 110–111 (Poyser, London, 1993).
Gosler, A. G. Fritillary 1, 29–74 (1990).
Grey, I. thesis, Univ. Oxford (1987).
Svensson, L. Identification Guide to European Passerines (Naturhistoriska Riksmuseet, Stockholm. 1970).
Spencer, R. The Ringer's Manual (British Trust for Ornithology, Tring, 1965).
Gosler, A. G., Greenwood, J. J. D., Baker, J. K. & King, J. R. Ringing & Migration (in the press).
Garnett, M. C. thesis, Univ. Oxford (1976).
Gosler, A. G. Bird Study 38, 1–9 (1991).
Falconer, D. S. Introduction to Quantitative Genetics 2nd eds (Longman, London, 1981).
Gosler, A. G., J. Orn. Lpz. 135, 358 (1994).
Hinsley, S., Bellamy, P. E. & Moss, D. lbis 137, 418–420 (1995).
Ekman, J. Anim. Behav. 35, 445–452 (1987).
Ekman, J. & Lilliendahl, K. Behav. Ecol. 4, 232–238 (1993).
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Gosler, A., Greenwood, J. & Perrins, C. Predation risk and the cost of being fat. Nature 377, 621–623 (1995). https://doi.org/10.1038/377621a0
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DOI: https://doi.org/10.1038/377621a0
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