To the ecology of the Red-necked Grebe in the West of Ukraine. - V.V. Buchko, A.A. Bokotey, I.V. Skilsky, B.I. Godovanets, I.V. Shidlovsky. - Berkut. 4 (1-2). 1995. P. 25-30.
Data were collected in 1985-1994, mainly in 1991-1993. The western subspecies (P. g. griseigena) nests In the study area. According to the literature and own data the Red-necked Grebe has been found in 40 points during last decades (Fig. 1). As a rule it nests on the territory of large flat countries abounding in overgrown lakes and fish ponds. In Precarpathians this grebe is occurred rare. The arrival takes place in the second half of March and the first half of April (Table 1). The stagnant overgrown reservoirs are the typical nesting stations. 50 nests were found and investigated. About 3/4 from them were situated in the reed, 22,0 % - in the reed and cat's-tail, 4,0 % - in the cat's-tail. Components of nests are described. The first eggs are laid in the third ten-day of April, the first and second ten-days of May (Fig. 2). The limit dates are 22.04 and 3.06. Oomorphological parameters are presented in the Table 3. The full clutch has as a rule 4-5 eggs. The average clutch size is 4.09+0.06. The brood lasts 22-24 days. The duration of the breeding period is 120-130 days from the first days of April to the end of July. [Russian].
Key words: Red-necked Grebe, West Ukraine, ecology, distribution, migration, breeding, nest, egg