resume preface of the revised edition foreword arrangement of orders and families explanantory notes on the symbols used in this book checklist Ⅰ.非雀形目 Ⅱ.雀形目 references Ⅰ.chinese language Ⅱ.foreign languages indices Ⅰ.scientific names Ⅱ.chinese names Ⅲ.english names