Pluckings and prey remains of 1086 specimens of Goshawk prey colected during a whole year were examined. Prey items included almost all species of medium size birds (65 species) and mammals (6 species) occurring in the study area. Over 60% of the prey was captured in open areas, even though these amounted to less than 30% of total area. Diet composition and its diversity were changing between winter and the breeding season. Very small differences in the diet were found in comparison to data collected 36 years earlier from the same area. The main prey (over 50% both by number and by biomass) were the domestic pigeons, belonging to the bigest prey eaten by Goshawks completely and therefore the most efficient as food. High availability of this prey in Central Poland especially in early breeding period, confirmed by small difference between prey sizes of male and female, is a possible reason of high numbers of the Goshawk in this region.