Birdlife main natural features of Slano Kopovo, and brackish vegetation are the which often resemble an other worldly landscape when viewed in some aerial photographs. Te geological composition of the soil testifes to the fact that this desert is an oxbow lake area that was once a route of the meandering River Tisa. Over time, the river changed its course, leaving stagnant pools, ponds and swamps behind. Slano Kopovo is one of the few preserved salt pool areas in the region. Its numerous bird species and rare ﬂora make the reserve very interesting. At the end of the 20th century, Slano Kopovo was declared an Important Bird Area (IBA) and, to date, more than 200 diﬀerent species have been recorded. During autumn, the reserve attracts as many as 20,000 cranes - a number only matched in very few locations in Europe. Slano Kopovo was the fnal nesting place of the White-headed Duck (Oxyura leucocephala) in the country, which vanished from these parts four decades ago. A few bird watching hides have been installed for visitors to observe the unique bird life of the salt mines.