Greek police on Wednesday moved hundreds more migrants out of Idomeni, the squalid tent city where thousands fleeing war and poverty have lived for months, on the second day of an operation likely to last a week.
Some 600 people were bussed away from the camp on the Macedonian border to newly opened camps near Greece's second city Thessaloniki, about 80 kilometres south, bringing the total moved out to 2,600 since Tuesday.
"We expect a total of 1,000 people to be removed today by nightfall," a police source in Athens told AFP.
"And there is an unknown number who have set out on their own," the officer added, suggesting the operation could be over sooner than expected.
But conditions at the new camps are far from ideal, the Save the Children charity said on Wednesday.
New camps 'inhumane' 
"When families arrived in the new camps yesterday, many with babies and young children, they were faced with deplorable conditions," the group's mission leader Amy Frost said in a statement, describing conditions as "inhumane".
There was very little food and water and just four incredibly dirty toilets for almost 200 people," she added.
When the evacuation began on Tuesday, some 8,400 people were still living in the muddy and dirty Idomeni camp, which has become a potent symbol of human suffering and chaos as Europe struggles with its worst migrant crisis since World War II.
Most of its residents have fled war and misery in the Middle East and South Asia.
Djohana, an English teacher from Idlib in northwest Syria, said all she had found in Greece so far were "lies and a bad situation".
"Even an animal can't live this life," she told AFP on her way out of Idomeni.
As police could not tell her which camp she would be taken to, she opted to join her family in a local hotel.
Around 100 migrants refused to enter the new centres on Tuesday and headed off by foot to downtown Thessaloniki.
Non state-run media were again kept at a distance during Wednesday's operation.
The Greece-Macedonia border is one of several in the Balkans closed since mid-February as countries on the migrant route have sought to halt the influx.
And the transfer comes after a brutal winter of freezing rain and mud which saw many people trying to force their way across the border, sometimes resulting in violent encounters with Macedonian police.
'People-smugglers' 
At its height, more than 12,000 people crammed into Idomeni, a camp that aid groups originally opened last year to accommodate just 2,500 people during what was at the time a short procedure to cross the border.
The camp exploded in size after Balkan states began closing their borders in February to stem the human tide seeking new lives in northern Europe.
Migrants are wary of relocating to organised camps away from the border or Athens because it could be harder to find people-smuggling contacts.
There are currently more than 54,000 migrants stranded in Greece, according to government estimates.
Protesting migrants have repeatedly blocked rail traffic between Greece and Macedonia, hampering trade between the two countries.
So far this year, the International Organisation for Migration says an estimated 190,000 migrants and refugees have entered Europe by sea, arriving in Italy, Greece, Cyprus and Spain. More than 1,350 have died en route.
A controversial deal between Turkey and the EU came into force in March aiming to halt the flow of people to Greece.
But Turkish President Recep Tayyip Erdogan warned on Tuesday that parliament would block laws linked to the deal if Ankara is not granted its key demand of visa-free travel.