used in 啁哳[zhao1 zha1]; Taiwan pr. [zhou1]
(literary) (onom.) combined twittering and chirping of many birds
(bird) twitter; chirp
老鸟啁啾，小鸟吱吱叫。
lǎo niǎo zhōu jiū xiǎo niǎo zhī zhī jiào
Old birds sing, young birds twitter.