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 2020 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 25th till 30th 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) 651, White-fronted Goose (Anser albifrons) 212, Moorhen (Gallinula chloropus) 70, Reed Bunting (Emberiza schoeniclus) 47, Green-winged Teal (Anas crecca) 19, Wigeon (Anas penelope) 17, Mute Swan (Cygnus olor) 9, Common Coot (Fulica atra) 8, Greylag Goose (Anser anser) 3, Northern Shoveler (Anas clypeata) 2, Mandarin Duck (Aix galericulata) 1, Eurasian Bittern (Botaurus stellaris) 1, Caspian Yellow-legged Gull (Larus cachinnans) 1, Pied Wagtail (Motacilla alba) 1 and Grey Wagtail (Motacilla cinerea) 1. Totally 1043 birds belonging to 15 species were observed.