The United Nations refugee agency, the UNCHR, says nine-thousand people have left their homes as a result of the recent fighting in Kosovo.
A UNHCR spokesman described it as the worst wave of refugees this year.
The organisation estimates that around four thousand people fled the area around the town of Vucitrn , where Serbian forces and ethnic-Albanian separatists clashed on Monday.
The other refugees come from northern and central Kosovo.
The UNHCR says there are currently more than two-hundred-thousand refugees in Kosovo.
Aid convoys are making regular trips to a number of villages in the province.
From the newsroom of the BBC World Service