The article presents the results of ornithological studies carried out on the Ulagan plateau (Eastern Altai) due to increasing anthropogenic influence. This paper presents a species overview and features of the nesting biology of some species of the Anatidae Family. Considerable attention is paid to the features of spring arrivals, the course of nesting processes, spring and autumn migrations. The paper analyzes data on egg laying and nesting dates. This process includes such periods as: the beginning of oviposition, the period of mass oviposition and the latest ovipositions, the dates of the meetings of downy jackets, flaps, the dates of flights and the beginning of accumulations in preparation for long-distance migration are described. In the territory of the Altai Republic, this problem has been little studied and requires further research.