“…Sibley and Ahlquist, 1990;Leisler et al, 1997;Helbig and Seibold, 1999;Beresford et al, 2005;Alström et al, 2006;Johansson et al, 2008a;Fregin et al, 2009Fregin et al, , 2012. The three genera Acrocephalus, Hippolais and Chloropeta have been split into several genera and/or subgenera, and there has been much disagreement regarding the classification of these taxa, especially Acrocephalus (Grant and Mackworth-Praed, 1941;Wolters, 1982;Watson et al, 1986;Sibley and Monroe, 1990;Dickinson, 2003;Haffer, 1991;Leisler et al, 1997;Helbig and Seibold, 1999). Leisler et al (1997) and Helbig and Seibold (1999) came to nearly identical conclusions based on analyses of cytochrome b sequence data.…”