Abstract
Use patterns of lipid-rich, fleshy fruits were examined for frugivorous birds. Approximately 20% of fleshy-fruited species within plant communities bear fruit with >10% dry weight lipids. These fruits are fed upon by the most heavily frugivorous bird species in those communities studied and are the focus of highly specialized relationships among birds and fruits. In aviary tests some temperate frugivores show preference for higher lipid native fruits and prefer higher-lipid artificial fruits with as little as 3% wet weight difference in lipid content. The importance of lipids in fruit preference by birds, and the possible effects of differing digestive physiologies in birds are discussed.
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Stiles, E.W. The influence of pulp lipids on fruit preference by birds. Vegetatio 107, 227–235 (1993). https://doi.org/10.1007/BF00052225
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DOI: https://doi.org/10.1007/BF00052225