Wild monkeys rest on a branch in the Khandagiri cave hills in Bhubaneswar, capital of the eastern Indian state Orissa, May 16, 2013. (Xinhua/Stringer)

Wild monkeys rest on the staircase in the Khandagiri cave hills in Bhubaneswar, capital of the eastern Indian state Orissa, May 16, 2013. (Xinhua/Stringer)

A newly born baby monkey is seen with its mother in the Khandagiri cave hills in Bhubaneswar, capital of the eastern Indian state Orissa, May 16, 2013. (Xinhua/Stringer)