Reproduction of Anas clypeata L. was studied in the Unzhensky stationar in 1960 and 1961. A prenesting period lasted for 11-14 days, nesting for about two months. Anas clypeata L. makes nests on meadows, islands and plavni ...

Seasonal character of a nutrition change in the Anatidae 14 species was studied in the lake part of the water storage basin and its Unzhenian and Nemdskian spurs in 1959—1964. Content of 326 stomaches was investigated in ...