Tsega, a 38-year-old migrant from Eritrea, poses with her 5-year-old son Naher in front of her tent at a disused gymnasium where migrants stay in shelters in Calais, northern France, October 28, 2014. Tsega fled his country 6 years ago and hopes to join her sister who lives in the UK. Roughly 2,300 immigrants, many of them from Africa, are roaming the streets and sleeping in makeshift camps in and around Calais while waiting to attempt the final leg of their bid to reach Britain, according to estimates from the local prefect's office. Britain and France have agreed to improve border controls and cooperate more closely in an effort to control a growing number of illegal immigrants trying to cross the English Channel from the French port city of Calais to Britain. Picture taken October 28, 2014. REUTERS/Pascal Rossignol (FRANCE - Tags: SOCIETY IMMIGRATION POLITICS) ATTENTION EDITORS - FRENCH LAW REQUIRES THAT FACES OF MINORS ARE MASKED IN PUBLICATIONS WITHIN FRANCE