According to published data on bird abundance in Europe, the chaffinch has proved to be the most abundant species. To reveal the causes of its absolute dominance in all bird communities оf the European forest zone, an analysis has been made of parameters characterizing the ecological niche, reproduction, migrations, survival rate, and other aspects of the life strategy of this species in comparison with two other highly abundant bird species. The results show that the strategies of the chaffinch and the willow warbler (Phylloscopus trochilus)—a species from a different family—are highly similar, while those of the chaffinch and the closely related brambling (Fringilla montifringilla) significantly differ from each other.

中文翻译：

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在欧洲森林鸟类群落中占绝对优势的花雀（Fringilla coelebs L.）现象

根据已发表的关于欧洲鸟类数量的数据，金雀花已被证明是数量最多的物种。为了揭示其在欧洲森林区的所有鸟类群落中绝对优势的原因，已对表征该物种的生态位、繁殖、迁徙、存活率和其他方面的参数进行了分析，并与另外两种高度丰富的鸟类。结果表明，花雀和柳莺（Phylloscopus trochilus）——一个来自不同科的物种——的策略高度相似，而花雀和近缘荆棘（Fringilla montifringilla）的策略则截然不同。