亲爱的朋友们:你们知道吗?捕鼠能手猫头鹰平均一年能吃一千多只田鼠。如果一只田鼠一年吃掉1千克粮食,一只猫头鹰就为人类节约1吨粮食。森林卫士灰喜鹊一年能吃15000余条松毛虫。一只燕子一个夏天能消灭40多万只蚊子。能吃害虫的还有百灵鸟、山雀、杜鹃、八哥……它们是地球的歌??家、人类的好朋友。你们知道吗?没有鸟类作为天敌,害虫和老鼠就没有约束了。我们自然界的生态 Dear friends: Did you know that catching owls can eat more than 1,000 voles a year on average? If a vole eats 1 kg of grain a year, an owl saves 1 tonne of food for mankind. Forest Guard Gray magpie eat more than 15,000 pine caterpillars a year. A swallow can eliminate more than 400,000 mosquitoes a summer. Pests can eat lilies, tits, rhododendron, starling ... ... They are the earth’s song house, a good friend of mankind. Did you know that pests and mice are not bound without birds as their natural enemies? The ecology of our nature