A wild smooth-coated otter sniffs around on Jiak Kim Bridge along Singapore River in Singapore, Jan. 5, 2021. (Xinhua/Then Chih Wey)

A white-collared kingfisher preens itself on a tree next to Jiak Kim Bridge along Singapore River in Singapore, Jan. 5, 2021. (Xinhua/Then Chih Wey)

A pair of white-collared kingfishers rest on a tree next to Jiak Kim Bridge along Singapore River in Singapore, Jan. 5, 2021. (Xinhua/Then Chih Wey)