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Research Article | Open Access

Population structure and mating system of the Red-crested Korhaan (Lophotis ruficrista) in South Africa

Department of Environmental Sciences, College of Agriculture and Environmental Sciences, University of South Africa, PO Box 392, Pretoria 0003, South Africa
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Abstract

Background

The mating system of the korhaans and bustards in southern Africa is either based on polygyny or monogamy. The Red-crested Korhaan (Lophotis ruficrista) has been described as polygynous but otherwise very little is known about its breeding biology. The aims were to describe the population structure and male behavior during breeding.

Methods

The data collected for this paper was mainly based on field transect surveys carried out in 2009, 2010 and 2011. The population structure of the Red-crested Korhaan in the temperate Borakalalo Game Reserve (BGR) was compared with that in the arid Molopo Nature Reserve (MNR) (both situated in the North West province of South Africa). The study was mainly conducted in the BGR but additional work was conducted in the MNR for comparison.

Results

The difference in mean group sizes between MNR (1.03) and BGR (1.07) was statistically not significant. Group sizes were not affected by climate despite the fact that the BGR received about 650 mm precipitation per annum and the MNR about 200 mm. In both reserves the apparent sex ratios were skewed in favor of males (1:0.29 in the BGR and 1:0.1 in the MNR). The population was dispersed in a clumped manner which is ascribed to the formation of leks. Leks were positioned in open habitat while females invariably concealed themselves under cover.

Conclusions

The leks formed the pivot of the mating system of the Red-crested Korhaan and are identifiable social structures that field ecologists can use to monitor population stability.

Keywords

DispersionLophotis ruficristaLeksMating systemGroup size

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Avian Research
Volume 5 Issue 1,
January 2014
Article number: 9
DOI: 10.1186/s40657-014-0009-3
Cite this article:
van Niekerk JH. Population structure and mating system of the Red-crested Korhaan (Lophotis ruficrista) in South Africa. Avian Research, 2014, 5(1): 9. https://doi.org/10.1186/s40657-014-0009-3

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Received: 08 December 2014
Accepted: 09 December 2014
Published: 24 December 2014
© 2014 van Niekerk; licensee BioMed Central.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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