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• W2071453710 abstract "Waterfowl show considerable variability in their degree of territoriality. In this study, the adaptive significance of territorial behaviour in buffleheads, Bucephala albeola, a highly territorial species, was investigated. The following hypotheses were tested: (1) the territory secures food resources for the laying female (food hypothesis), (2) the territory provides undisturbed feeding time for the female and ensures paternity (mate-guarding hypothesis), (3) the territory protects the nest site (nest site hypothesis). Contrary to predictions of the food hypothesis, territory size was not inversely related to food abundance in the territory, and food was correlated to only two of five measures of reproductive success: females started laying earlier and clutch weight was slightly higher (but only in one year) on territories with more food. When males were removed during the egg-laying period, neighbouring males behaved aggressively toward widowed females and they usually evicted these females from their territory. Widowed females spent less time feeding and more time alert. Females tended to use a territory adjacent to the nest, and those that did not do so suffered a higher rate of nest parasitism. Thus mate guarding may be a major function of territorial behaviour in buffleheads. Protection of the nest site may further explain why bufflehead territories are more site-specific than those of other territorial ducks." @default.
• W2071453710 created "2016-06-24" @default.
• W2071453710 creator A5056911184 @default.
• W2071453710 date "1987-04-01" @default.
• W2071453710 modified "2023-10-14" @default.
• W2071453710 title "The adaptive significance of territorial behaviour in breeding buffleheads: a test of three hypotheses" @default.
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• W2071453710 doi "https://doi.org/10.1016/s0003-3472(87)80258-0" @default.
• W2071453710 hasPublicationYear "1987" @default.
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