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Comportamento de forrageamento do pernilongo-de-costas-brancas, Himantopus melanurus (Vieillot, 1817) (Aves: Recurvirostridae) em Santa Gertrudes, SP, Brasil

2007; UNIVERSIDADE FEDERAL DE MINAS GERAIS; Volume: 7; Issue: 2 Linguagem: Inglês

10.35699/2675-5327.2006.23155

ISSN

2675-5327

Autores

Carlos O. A. Gussoni, André de Camargo Guaraldo,

Tópico(s)

Fish Ecology and Management Studies

Resumo

The foraging behavior of two White-backed stilts (Himantopus melanurus) was studied in a lake at the municipality of Santa Gertrudes, state of São Paulo, Brazil. The foraging strategies observed were classified in two categories: pluging (65.8% of total maneuvers) and pecking (34.3%). Only in 26.8% of the foraging maneuvers the individuals captured preys (72.9% by plunging and 27.1% by pecking). When comparing both strategies, plunging was successful 29.7% of the times, but pecking only 21.2%. At the study site, individuals foraged only up to 20 m away from the lake margin. The foraging area exploited by the White-backed stilts was estimated in about 720 m2. Foraging activities lasted since before sunrise until after sunset.

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