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.


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  (ERA 2012 Listed)    (ERA 2010 Rank C)   Check publisher's open access policy
Publication date 2012-04
Sub-type Article
Year available 2012
DOI 10.2989/00306525.2012.677510
Volume number 83
Issue number 1
ISSN 0030-6525; 1727-947X
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
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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