Interactions among Avian Scavengers in Southern Spain

Publication Type:Journal Article
Year of Publication:1976
Authors:ALVAREZ, FERNANDO, DE REYNA, LUISARIAS, Hiraldo, F
Journal:Ornis Scandinavica
Volume:7
Issue:2
Date Published:1976
ISBN Number:00305693
Keywords:Corvidae, Pica, Pica pica, Spain
Abstract:The various species of avian scavengers in southern Spain concentrated on different parts of the carcasses. A facilitatory effect of vultures and Wild Boars on Magpies and kites were detected, as well as an inverted (inhibitory) effect when short-period records were considered. After a directionality index of aggressive behaviour was obtained, it was shown that within the same species either threats, attacks, or fights occur, whereas among different species the smaller size scavengers mainly direct attacks towards those of greater size and the latter mainly threaten the smaller ones. When the response to other individuals was recorded, an interspecific hierarchy pattern was detected. The intraspecific response made apparent a gradient of increasing tolerance from Magpies to kites and vultures.
URL:http://www.jstor.org/stable/3676191
Short Title:Ornis Scandinavica
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