Abstract
Waterbird Census” project started in 2004 with the aim to achieve almost complete coverage of suitable wetlands and consequently to assess the current distribution and numbers of wintering waterbirds. The project is carried out in variable weather condition of consecutive winters, i.e. 2003/04, 2004/05, 2005/06, 2006/07, 2007/08 and 2008/09.
For each particular species the following information are given: Occurrence and numbers of particular species in January 2008 and 2009 are given in maps. Open circles represent sites with species occurrence and its numbers in categories: 1–10 birds, 11–100 birds, 101–1000 birds and more than 1000 birds.
Unoccupied sites are shown by close circles.