On the basis of the data of year-round accounts in the city of Kemerovo and its vicinities in 1999 - 2001 a quantitative assessment of seasonal aspects of the bird population is given. Seasonal changes of the total number of birds, the specific diversity, the dominating species, the total biomass, the amount of the energy transformed by birds, their multistage distribution and faunistic composition are characterized and compared for all habitats surveyed.