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- W2316398957 abstract "We address the importance of a nearby source of cover to foraging White-crowned Sparrows (Zonotrichia leucophrys) belonging to different classes of social status and plumage. An artificial source of cover was provided, in the form of a constructed bush, which allowed manipulation of the degree and position of cover. In various manipulations, the birds were offered no cover, the position of the cover was switched, and a simple perch was offered as an alternative to the bush. White-crowned Sparrows usually perched first in a nearby source of cover before they fed, and strongly preferred to feed close to the artificial bush. Experiments demonstrated that the bush was used as a source of cover and not merely as a perch. The bright-colored dominant adult birds fed closer to cover than did the more subordinate, dull-colored, and relatively cryptic immatures. Adults apparently displaced the latter from sites close to cover as immatures fed closer when no adults were present. These results may explain why dull-colored subordinate birds do not cheat by displaying the brighter plumage of dominant sex/age classes. Cheaters might be more prone to predation than noncheating subordinates because both classes might be forced to feed away from cover by inherently dominant birds (i.e. actual adults), but cheaters would be more conspicuous than noncheaters due to their brighter plumage. Thus, the potential benefits of cheating may not outweigh the increased cost of heightened susceptibility to selection by a predator." @default.
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- W2316398957 title "Importance of Dominance Status and Distance from Cover to Foraging White-Crowned Sparrows: An Experimental Analysis" @default.
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- W2316398957 doi "https://doi.org/10.2307/4088771" @default.
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