我国鸟类资源十分丰富,据不完全统计,数量多达1.166种.鸟类栖息于森林之中,许多鸟又以森林害虫为主食,所以人们将这些吃害虫的益鸟称为“天然护林员”.鸟类食虫本领高强.如啄木鸟靠脚爪攀树,用其凿子般的大嘴,几下就可将蛀干虫道口啄开,然后用尖端带有倒钩的细长舌头,从树干深处取食害虫.大斑啄木鸟除善长啄食蛀干害虫外,还啄食27种食叶害虫,因此,人们送给它树木“高级外科医生”的美名.鸟类食虫量很大,是消灭森林害虫的能手.一只杜鹃, According to incomplete statistics, the number is as high as 1.166 species. Birds inhabit forests, and many birds predominate with forest pests, so people refer to these pests as “natural rangers” Birds of insects have the advantage of strong ability, such as woodpecker by pawl climbing tree, with its chisel-like big mouth, a few can peck the worm mouth peck, and then use the tip of the barbed slender tongue, deep from the trunk Pests eat pests Great spotted woodpecker in addition to good-pecking pests, but also pecking 27 kinds of leaf-feeding pests, so people give it the tree “senior surgeon” reputation. , Is an expert in the elimination of forest pests .A rhododendron,