Degree of prevalence of different song types of chaffinch (Fringilla coelebs L.) in populations of the European Russia ()
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ABSTRACT
When studying song organizations of chaffinch (Fringilla coelebs L.), we find the unique typological parities (ratio) of songs in different local populations of a species-specific area. The degree of prevalence of different chaffinch song types can’t correspond to percentage proceeding from their general (common) number in a population. Thus different areas of Russia are forming original (different) song cultures of chaffinch, consisting of the certain set and a parity (ratio) of song types, frequently including the so-called dialect song forms, that have been observed. The complex interrelation of geographical variability and structural variability of chaffinch song in many respects gives a support in an evolutionary view from the given aspect.
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