GREY HERON

Grey Heron (Ardea cinerea) - most numerous heron in Upper Vistula Valley, but does not breed here regularly. Breeds only individually and ocassionally. Despite favourable conditions does not form breeding colonies.

The biggest flock (beyond breeding season)  were 464 birds observed on 25th VIII 1992 on Goczałkowicki Reservoir (M. Karetta). 

Grey Heron