![]() The frequency and temporal characteristics of abietinus and tristis tret calls were found to be intermediate in the hybridisation zones between them both in the Arkhangelsk region and in the southern Urals. In contrast, different chiffchaff taxa usually perform different tret calls, however, both European taxa ( collybita and abietinus) perform acoustically very similar calls. One exception was the Siberian chiffchaff ( tristis), whose call structure showed significant differences between populations found in Central Siberia and North–Eastern Yakutia. Within the range of most taxa, the structure of the tret calls remains very uniform. Our studies also encompass two hybridisation zones of abietinus and tristis. ![]() Les poètes du monde entier composent en permanence différents. Les strophes aident à définir des types formels de poèmes. Les strophes regroupent des lignes spécifiques avec la même idée pour faciliter la compréhension du lecteur. We present here the results of a comparative study of tret calls of P hylloscopus collybita collybita, P. Les strophes simplifient le processus de mémorisation des poèmes. Although the song of the chiffchaffs from different taxa has attracted a lot of attention from researchers, the variety of tret calls still remains unexplored. Chacun d’entre eux pouvant donner lieu tre juxtaposs selon l’effet recherch. Phonetically, tret calls differ markedly from the elements (notes) of the basic song. Les diffrents formes de strophe Les strophes sont rgies par des rgles de base : deux, trois ou quatre ensemble de vers. The chiffchaff’s tret calls are short sounds rhythmically repeating in intervals between the song strophes. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |