engleski

Size and distribution of breeding colonies of Grey Heron Ardea cinerea in lowland Croatia, Acrocephalus

Grey Heron Ardea cinerea is the most abundant heron species in Croatia, with an estimated population of 1500 − 3000 pairs. We conducted a survey of existing colonies during the 2004 breeding season and counted 3674 pairs in 19 colonies. Based on this data the Grey Heron breeding population thresholds should be increased and set to 3000 − 4000 pairs. The colonies are distributed primarily along the remaining floodplains of the Danube, Drava, Sava and Kupa rivers as well as on commercial cyprinid fishponds

Grey Heron ; distribution ; lowland ; Croatia

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