爱鸟漫话方明举，杜思高鸟是人类亲密的伴侣和朋友。他们是害虫和鼠类的天敌，忠诚地保护着农林牧业。一只灰喜鹊一年能消灭１８０００多条松毛虫、金龟子，使６０多亩山林免受虫害；一只燕子一个夏季就能捕食１２０万只苍蝇、蚊子、牛虻等；一只大山雀一昼夜吃掉的害虫重... Bird of Love speaks squarely, Dos bird is a close human partner and friend. They are predators of pests and rodents, loyally protecting agriculture, forestry, animal husbandry. A gray magpie can eliminate more than 18,000 pine caterpillars and chafer each year, leaving 60 acres of mountain forests free of pests. A swallow can feed 1.2 million flies, mosquitoes and calves in summer. A large tits eats day and night Pests heavy ...