Very rare resident. Inhabits old deciduous and mixed forests. Breeds by separate pairs. Nest is located in tree holes, on attic of house, in old Corvids or raptors nests at height 0.5-10 m above ground. Males utter mating-calls from the end of March up to end of July. Clutches of 2-6 eggs found in April - May probably. Fledglings recorded from end of May to early June.
Gavrilov E. I., Gavrilov A. E. "The Birds of Kazakhstan". Almaty, 2005. Э.И.Гаврилов. "Фауна и распространение птиц Казахстана". Алматы, 1999. В.К.Рябицев. "Птицы Урала, Приуралья и Западной Сибири". Екатеринбург. Изд-во Уральского университета, 2000.