Same, yet in traditional Chinese print, can be downloaded from below URL of Wild Bird Society of Taipei:
http://wbst.org.tw/news/conference-announcement/228-鶯科-2.html
(陸維出版,董江天繪製,劉陽指導的《兩岸三地50種柳鶯辨識》即將於三月中旬完成;不透水紙質印製摺頁每份50台幣。)
If birders know of any Taiwan publications of reference value, please share such listing here. TX.
如鳥友知悉任何臺灣觀鳥的出版物,請在此分享。謝謝。