COSTA, Leny Cristina Milléo. Interspecific aggressive behavior in the southern lapwings, Vanellus chilensis (Molina, 1782) (Charadriiformes, Charadriidae). []. , 4, 2, pp.95-108. ISSN 1517-2805.

Interspecific conflict responses of Southern Lapwings Vanellus chilensis to intruders and predators were observed in the urban area of Curitiba, in the Cargill experimental farm in Toledo, and in the Passeio Público Park of Curitiba, Brazil in captivity. Number of intruders, number of lapwings attacking and pursuing, frequency of response to directed and undirected invasions, of persecutions and types of attacks were recorded. The use by lapwings of distraction displays, escape, attack, and threat behavior varied according to season. In the non-reproductive season, lapwings escaped from intruders by walking, running and flying. In the reproductive season, the most frequent responses were distraction displays, performed during the incubation of eggs and the protection of nestling. Defensive responses depended on the distance and the type of approach of intruders.

: Defensive behavior; Interspecific conflict; Southern lapwings; Vanellus chilensis.

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