[Intraspecific genetic differentiation of the Siberian Rubythroat (Luscinia calliope): data of sequencing the mtDNA cytochrome b gene].

For the first time, genetic diversity and intraspecific subdivision of Luscinia calliope was studied according to the data of the mtDNA cytochrome b gene sequencing. The strong differentiation of haplotypes of the Siberian Rubythroat into western and eastern groups, which include subspecies according to their geographical attachment, was revealed. A high-haplotypic (Hd = 0.

[Maintaining of the morphological specificity and genetic introgression in populations of the great tit Parus major and the Japanese tit P. minor in the middle Amur region].

The ranges of the great tit Parus major and the Japanese tit P. minor overlap in the middle Amur region, where hybridization of these two species occur. These species have contacted for nearly a century on the western slope of the Malyi Khingan Ridge (the central part of the sympatry zone), but the great tit has colonized territories to the east of the ridge only in the last two decades.

[Bloodsucking midges from the nests of birds in the foothills of Western Sikhote-Alin].

The specific composition and number of midges in nest biotopes of birds of forest formations of Western Sikhote-Alin are given. 17 species of the genus Culicoides were found to attack 17 species of birds during the nesting period. The number of midges in nests depends both on the biotopical distribution of nests and mode of living of birds and on the total number of midges in nature.