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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Courtship displays of the Pennant-winged Nighjar, Semeiophorus vexillarius
Auteurs :	H. D. Jackson, Auteur
Type de document :	Article
Dans :	Ostrich (75(1-2) MAR 2004)
Article en page(s) :	1-4
Langues:	Anglais
Résumé :	Use of a night-vision telescope, with a Pocket Memo for recording a running commentary, allowed the courtship displays of a male Pennant-winged Nightjar, Semeiophorus vexillarius, near the Muneni River (18degrees59'S, 32degrees41'E, 1000m), Zimbabwe, to be observed and noted in great detail during five hours at dusk and dawn in October 1971. This male, in breeding dress, regularly displayed in a clearing in the Brachystegia/Julbernardia woodland, with sparsely spaced trees and very short burnt grass. His favourite perch was a small (10 x 8 x 5cm high) but conspicuous white stone, which served as the focal point for my observations. Table 1 provides an approximate record of this male's activities from 18h06 to 21h30 on 4 October (a verbatim transcript of the recorded field notes is available by e-mail). Further observations were recorded from 03h30 to 05h00 on 14 October. Casual observations of courtship displays were also made with conventional (7 x 50) binoculars at Muneni River, and at Warren Hills (17degrees50'S, 30degrees59'E), Ranelia Farm (19degrees22'S, 32degrees37'E), and Bulawayo (20degrees10'S, 28degrees35'E), all in Zimbabwe, and Chilumba (10degrees26'S, 34degrees16'E), Malawi. My observations, with those of Shaw (1993) and the few other first-hand accounts available (Parnell 1960, Masterson 1972, Weaving 1973, Stjernstedt 1975, 1979, Bruce-Miller 1983, Sievi in litt. 2000), allow presentation of the following speculative synthesis.

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