{"data":[{"source":"bio.acousti.ca","id":"50775","topic":"behaviour","value":"References to song. Ragge & Reynolds (1998): recordings from Western Europe; Savitsky & Lekarev (2007): recordings from the Lower Volga Region and Western Kazakhstan (Janybek, ca. 5 km from the Russia border); Savitsky (2009): recordings from Western Kazakhstan (Janybek, ca. 5 km from the Russia border).\n\nSong. The calling song is a single echeme lasting 5\u20137 s and consisting of about 60\u201370 syllables following each other with a period of 85\u2013100 ms in our recordings (Figs. 7\u20138). Each echeme begins quietly and rapidly reaches maximum intensity. There are 4\u20135 gaps in last two thirds or one half of a syllable (Fig. 9).\n\nComparative notes. The calling songs of males from the Central Tien Shan Mts. are quite similar to the songs recorded from Europe and Western Kazakhstan.","topic_link":"http:\/\/rs.tdwg.org\/ontology\/voc\/SPMInfoItems#Behaviour","info_url":"https:\/\/bio.acousti.ca\/node\/50775"}]}