The temperature in Tianjin has been on the rise, which has reinvigorated birds at the Tianjin Zoo.

Mandarins ducks and swans are the first birds to enjoy the early spring. They swim in the water and play on the ground, seemingly in a performance for visitors to the zoo.

Birds have regained their vigor at the Bird Forest in the Tianjin Zoo on Feb 13. [Photo/Xinhua]