鸟类是自然生态系统的一个重要组成部分,是人类的宝贵财富。鸟类在美化生活、保护环境、科学研究、文化教育、对外贸易、繁荣经济等方面都具有重要价值。许多鸟类在控制农、林害虫都身怀绝技,如:一只灰喜鹊一年可消灭15000多条松毛虫,可保护近2亩松林;山雀一窝幼鸟在16天繁殖期就能吃掉6000多条松毛虫;啄木鸟对蛀干害虫更是大显神通,历 Birds are an important part of the natural ecosystem and are the precious wealth of mankind. Birds in the beautification of life, environmental protection, scientific research, culture and education, foreign trade, economic prosperity and so has an important value. Many birds control pests in agriculture and forests. For example, a gray magpie can destroy more than 15,000 pine caterpillars in one year and can protect nearly 2 mu of pine forests. A nest of chickens can eat during the 16-day breeding season Lost more than 6000 pine caterpillars; woodpeckers on stem borers is even more apparent, calendar