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Are Incubation and Fledging Periods Longer in the Tropics?
Eli Geffen and Yoram Yom-Tov
Journal of Animal Ecology
Vol. 69, No. 1 (Jan., 2000), pp. 59-73
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2647340
Page Count: 15
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1. It is commonly believed that the smaller clutch size of tropical compared with temperate birds is a response to a high predation rate. If this is true, one would expect incubation and fledging periods in the tropics to be shorter than in temperate regions, but they are generally thought to be longer in the tropics than in northern temperate areas. 2. In this paper we show that among passerines in both the Old and the New World, there is little or no difference in either incubation or fledging periods between temperate and tropical areas. 3. We suggest that tropical birds differ from temperate ones in their clutch size and extended post-fledging periods, which is necessary for juvenile survival, but probably not in other life history parameters.
Journal of Animal Ecology © 2000 British Ecological Society