极北 jíběi extreme north Definitions Defs Origin Strokes Stroke Words Sentences Sents 极北朱顶雀 jíběizhūdǐngquè Arctic redpoll (bird species of China) Arctic redpoll (Acanthis hornemanni)极北柳莺 jíběiliǔyīng Arctic warbler arctic warbler (Phylloscopus borealis), a species of bird found in northern regions and parts of China