Since 2011, The International Waterbird Census (IWC) in Serbia is coordinated by Bird Study and Protection Society of Serbia. The IWC is coordinated by Wetlands International and it is organized every year in most countries of the world. In 2021 the period of observations was between 10th and 30th of January and the results of waterbird counting had to be provided the IWC until 10th of February.
Ornithologists from Ornithological work group of Arcus Ecological Association participate in national survey since 2012. This year, the activities took part from 23rd till 24th January. The whole area of the Zobnatica lake was observed, as well as the Krivaja creek completely to Đurđin. Also, the Krivaja creek was observed from Bačka Topola to Bajša and on to Lovćenac in Municipality of Mali Iđoš.
In our observation area the most important waterbird species were the following: Mallard (Anas platyrhynchos) 480, Common Coot (Fulica atra) 115, Mute Swan (Cygnus olor) 76, Reed Bunting (Emberiza schoeniclus) 24, Moorhen (Gallinula chloropus) 23, Muscovy Duck (Cairina moschata) 11, Gadwall (Anas strepera) 4, Wigeon (Anas penelope) 3, Grey Heron (Ardea cinerea) 3, White-tailed Eagle (Haliaeetus albicilla) 2, Mandarin Duck (Aix galericulata) 1 and Farm Duck (Anas domesticus) 1. Totally 743 birds belonging to 12 species were observed.