Lack of experience-based stratification in homing pigeon leadership hierarchies.

Royal Society Open Science
Isobel WattsDora Biro

Abstract

In societies that make collective decisions through leadership, a fundamental question concerns the individual attributes that allow certain group members to assume leadership roles over others. Homing pigeons form transitive leadership hierarchies during flock flights, where flock members are ranked according to the average time differences with which they lead or follow others' movement. Here, we test systematically whether leadership ranks in navigational hierarchies are correlated with prior experience of a homing task. We constructed experimental flocks of pigeons with mixed navigational experience: half of the birds within each flock had been familiarized with a specific release site through multiple previous releases, while the other half had never been released from the same site. We measured the birds' hierarchical leadership ranks, then switched the same birds' roles at a second site to test whether the relative hierarchical positions of the birds in the two subsets would reverse in response to the reversal in levels of experience. We found that while across all releases the top hierarchical positions were occupied by experienced birds significantly more often than by inexperienced ones, the remaining experienced bird...Continue Reading

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Citations

Oct 7, 2016·The Journal of Experimental Biology·J E Herbert-Read
Mar 28, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Takao SasakiDora Biro
Sep 15, 2016·Biology Letters·Isobel WattsDora Biro

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