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Nepotistic vigilance behavior in Siberian jay parents
Author(s) -
Michael Griesser
Publication year - 2003
Publication title -
behavioral ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.162
H-Index - 118
eISSN - 1465-7279
pISSN - 1045-2249
DOI - 10.1093/beheco/14.2.246
Subject(s) - vigilance (psychology) , offspring , biology , flock , biological dispersal , surprise , predation , zoology , ecology , demography , psychology , social psychology , neuroscience , pregnancy , population , genetics , sociology
Many Siberian jay offspring (up to 50%) postpone independence and stay with their parents for up to 3 years. Parents offer such nondispersers a benefit in that they increase their vigilance while feeding together with retained offspring. In contrast, parents reduce their vigilance while in company of nonrelated flock members according to the "many eyes" principle. The preferential treatment offered by the parents provides an incentive for offspring to forego dispersal. Given evidence for mortality via surprise attacks by predators (goshawks), such nepotistic vigilance by parents could have a bearing on offspring survival and thereby promote delayed dispersal. Copyright 2003.

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