Naturalis Biodiversity Center Darwinweg 2 PO Box 9517 2300 RA Leiden The Netherlands;
N.Espino Street Poblacion Bugallon Pangasinan Philip-pines;
Birdtour Asia Ltd 26 Sutton Avenue Chellaston Derby DE736RJ UK;
Caprimulgidae; Macrogeograpic variation; Taxonomy; Vocalizations;