The article deals with the adaptation of local and introduced honey bees for the winter season in the north part of areal. The dynamics of changes in the amount of water in the body bees of Apis m. mellifera and Apis m. carpathica throughout the year. The content of water in the body bees of Apis m. mellifera less than Apis m. carpathica an average of 3–5%. In the spring in the bees Apis m. carpathica speed up the metabolic processes in the active state before they become of bees Apis m. mellifera. The influence of water on the dynamics of filling the rectum of bees. Significant activity of bees Apis m. carpathica in winter causes a high rate of filling rectum. Low rates of filling and low maximal load rectum was observed in the bees Apis m. mellifera. Slow and relatively low filling of rectum is an adaptation to a longer winter period.