kecil the one-year-old orangutan was taken to chicago zoo after being rejected by his mother and surrogate mother .
he was eventually given to maggie , 53 , who had already raised four children of her own and another surrogate .
keepers were concerned pair might not bond , but ten months later they have formed an inseparable connection .
kecil will go on display for the first time this weekend alongside his mother , but only for two hours at a time .