Typologization of Chiffchaff song elements. - A.V. Grishchenko, E.D. Yablonovska-Grishchenko. - Berkut. 20 (1-2). 2011. - P. 159-164.
There were two tasks in our research: we tested the semi-quantitative method of song analysis (Yablonovska-Grishchenko, 2006) at species with continuous song and systematized Chiffchaff song elements. Songs of 102 males were recorded during 2002–2011 in all the territory of Ukraine. They were investigated on the basis of sonograms. 52 elements were found. The semi-quantitative method have been used to song analysis. Elements were compared by lists of epithets which describe theirs shape (formula of element). Sørensen’s index was calculated for all pairs of elements. Tree clustering was creating by Ward’s method (using PAST 1.65). Three groups of elements were found. The structure of each group is similar. Long-time elements with complicated structure are situated in the first sub-group. Short reductive sounds are in the third one. Elements of the second sub-group have intermediate structure. Such distribution of element sub-groups may show direction of song elements evolution in Chiffchaff. [Russian].
Key words: Chiffchaff, Phylloscopus collybita, song elements, semi-quantitative method, sonogram.
Address: E.D. Yablonovska-Grishchenko, Kaniv Nature Reserve, 19000 Kaniv, Ukraine; e-mail: aetos@narod.ru.