sid serbia mudassir 18 pakistan city peshawar try enter european union 30 time always catch send back start point serbia dozens migrants brave near-freezing temperatures shrubs field near sid northwestern serbian town outside european union member croatia hop make another border run spend nights tent makeshift shelter shrub call jungle try 30 time serbia 16 months ... tire sleep jungle say mudassir dress black hood jacket meanwhile migrants young males huddle outside abandon print factory outskirts sid wait meal deliver international volunteer group name kitchen so-called balkan route migrants shut last year turkey agree stop flow return eu aid promise visa-free travel citizens people mainly middle east africa asia continue arrive serbia mainly turkey via neighbor bulgaria attempt enter croatia eu accord official data many 4,500 migrants government-operated camp serbia right activists say hundreds scatter capital belgrade towns along croatian border muhammad 22 moroccan town oujda say try reach eu 26 time three time make slovenia catch deport back serbia try ... family france girlfriend italy muhammad say bruno alvares name kitchen say migrants give two meals day water clothe footwear tent even cold matter keep try ... evolution live camp alvares say migrants afford pay smugglers often hide pass truck freight train ride top recently afghan girl kill train family attempt cross croatia migrants serbia 's north brave winter cross eu