A study of variability in colour, sizes and some ecological characters of Oenanthe picata (B I y t h) showed a rather distinct isolation of three groups of populations, each of them having a specific morphical composition, ...

The colour and pattern of the plumage, size and proportions of the body, distribution, nesting habits, behaviour and sounds of the Hyrcanian tit known as Parus lugubris hyrcanus were studied and compared with all subspecies ...

The data on distribution and quantity of Oenanthe xanthoprymna Hempr. et Ehr. in different biotopes of Badakhshan (the Tajik SSR) are given in the article. Nutrition of adult birds and nestlings in spring-summer period was ...

Susceptibility to DDT, BHC, parathion, and dipterex was studied in 14 species of mosquito larvae of more than 60 populations in different areas of the Dnieper basin and the Crimea. The evaluation of the susceptibility ...