měi nián / chūn tiān / chéng qún / de / hòu niǎo / dōu huì / fēi huí / zhè piàn / chuān zé / mì shí每年春天,成群的候鸟都会飞回这片川泽觅食。Every spring, flocks of migratory birds fly back to these marshes to forage.