Two pandas have managed to mate since their zoo shut down over the coronavirus outbreak, after a decade of trying.

The Hong Kong zoo said its resident male and female giant pandas were finally successful on Monday after “years of trial and learning”.

They had been trying since 2010, Michael Boos from Ocean Park said.

“The successful natural mating process today is extremely exciting for all of us, as the chance of pregnancy via natural mating is higher than by artificial insemination,” the executive director in Zoological Operations and Conservation said.

“We hope to bear wonderful pregnancy news to Hong Kongers this year and make further contributions to the conservation of this vulnerable species.”​

The zoo said it noticed Ying Ying, the female giant panda, spending more time playing in the water and Le Le, the male, leaving his scent around his habitat.

“Such behaviours are consistent with those common during breeding season,” Ocean Park said on Monday.

“The teams have been closely monitoring the giant pandas’ body conditions and behavioural changes and deemed it a peak oestrous this morning for natural mating opportunity.”

The zoo — which has been temporarily shut since January due to the coronavirus outbreak — said they could start detecting signs of pregnancy as early as June.

Giant pandas are classified as a vulnerable species with an estimated population of between 500 and 1,000, according to the International Union for Conservation of Nature’s list of threatened species.

They were upgraded from “endangered” in 2016.