A couple of black swans recently welcomed their new family members – four adorable baby swans in Niaoyu Wood, a zoo in Harbin, capital of Northeast China’s Heilongjiang province.

A couple of black swans lead their four newborns to forage in a pool in Niaoyu Wood, a zoo in Harbin, Northeast China’s Heilongjiang province. [Photo/my399.com]

"It takes about one year for baby swans’ feathers to turn black and it is rare for a mother swan to hatch out four baby swans at one time,” a staff member from the zoo said.