Bangladesh, Nov. 7 -- Four Nilgai calves have been born at Gazipur Safari Park, raising the park's total population of Asia's largest antelope species to 13, according to local media reports published recently.

Staff members first spotted the newborns about a month ago in the deer enclosure of the core safari area, where they were born. Authorities withheld the news until now to ensure the animals' safety and proper care.

The calves are reportedly in excellent health. Apart from nursing, they spend their time roaming and playing with other animals on the open grounds. Because of their young age, their sex has not yet been determined.

Wildlife Inspector Md. Raju Ahmed told the media that the calves have been placed under constant, spec...