Using playback of vocalisations to survey the Nahan's francolin, a threatened African forest galliform

Fuller, R. A., Akite, P., Amuno, J. B., Fuller, C. L., Ofwono, J. M., Proaktor, G. and Ssemmanda, R. (2012) Using playback of vocalisations to survey the Nahan's francolin, a threatened African forest galliform. Ostrich, 83 1: 1-6. doi:10.2989/00306525.2012.677510


Author Fuller, R. A.
Akite, P.
Amuno, J. B.
Fuller, C. L.
Ofwono, J. M.
Proaktor, G.
Ssemmanda, R.
Title Using playback of vocalisations to survey the Nahan's francolin, a threatened African forest galliform
Journal name Ostrich   Check publisher's open access policy
ISSN 0030-6525
1727-947X
Publication date 2012-04
Year available 2012
Sub-type Article (original research)
DOI 10.2989/00306525.2012.677510
Volume 83
Issue 1
Start page 1
End page 6
Total pages 6
Place of publication Grahamstown, South Africa
Publisher National Inquiry Services Centre
Collection year 2013
Language eng
Abstract Methods using playback of vocalisations have been widely used to survey elusive birds. Most of these methods suffer from the drawback that movement of birds is often elicited by the sound stimulus used, violating assumptions of distance sampling and generating unknown biases in resulting density estimates. Using playback survey data for a globally threatened forest galliform bird in Uganda, we found evidence of strong movement of birds toward the sound stimulus during playback surveys, and demonstrate that this caused a significant overestimation of bird density. We present a simple regression-based method for identifying and correcting this bias that is statistically robust and practical to implement for those surveying elusive forest birds. Based on our adjusted survey data, we estimate that about 40 000 Nahan’s Francolins remain in Uganda.
Keyword Rails
Conservation
Birds
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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