The article refl ects data on year-round studies of the urban mallard population in Saratov, allowing the assessment of the condition and the study of the factors infl uencing its formation. An estimate of the mallard population in the winter periods of 2020–2023 is presented. It is shown that the number negatively correlates with frosts and precipitation, and there is a statistically signifi cant positive relationship between the number of people feeding ducks and the number of mallards.
