On September 10, SUNMI made an appearance on SBS 'Running Man' and imitated various animals' sounds.
At first she tried imitating sound like a brown hawk-owl, but the host Yu Jae-seok said, "It's alright but it's a bit weak."
Then she immediately made sound like a cuckoo, which she seemed to mastered at it! Perhaps other bird heard SUNMI's call, a bird actually sat on a tree nearby!
You can listen to SUNMI's imitation of cuckoo starting from 02:20.
(Credit = SBS Running Man)