84 male Chaffinches Fringilla coelebs were recorded in five areas of W, SW, and S Poland during the breeding season 1994. Songs were analysed on the basis of sonagrams. A total of 57 distinct song types was found, and between 10 and 21 song types were sung in each study site. Areas relatively close to each other shared more song types than areas separated by several hundred km. Within a study area, some song types were more frequent than others. However, even the most frequent song type within an area was shared only by 20 to 33% of all males, the lowest values noted for any population yet. The repertoire sizes of individual males were also among the lowest reported for Chaffinches and averaged 2.0 song types in four and 1.9 song types in one of the study sites. The characteristic "kit" as the terminal song element was found in all areas. The proportion of males singing the "kit" differed significantly between the study sites and varied from 8 to 100%, with highest values in the north-western populations.
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