title: ABUNDANCE AND DISTRIBUTION OF HOODED CROWS ON THE EAST EUROPEAN PLAIN
abstract: To identify trends in the hooded crow distribution (Corvus cornix Linnaeus, 1758), the territory of the East European Plain (EEP) within the borders of the USSR in 1990 was divided into three approximately equal sectors: western, central and eastern. In each of them, the average long-term indicators of hooded crows abundance and numbers in the fi rst half of summer were calculated for natural zones, subzones and habitat groups. This allowed us to trace change trends in these parameters not only 
journal: Byulleten Moskovskogo Obshchestva Ispytatelei Prirody Otdel Biologicheskii