The reproductive parameters in birds at technogenic contaminated environment

The reproductive parameters in Fieldfare, Blyth reed warbler and Pied flycatcher in the zone of radiochemical contamination was studied. Nesting density, clutch size and egg volume of all bird species in the impact zone are not reduced. in comparison with the controls. In Pied flycatcher the embryonic mortality is increased in the impact zone, while in Fieldfare and Blyth reed warbler increased chick mortality is noted. In Fieldfare significant influence of technogenic factors on the breeding success is traced. In other species this effect is not observed.