1958年出版的初中动物学课本,不管在内容的编写和附图的选择等方面都较以前的课本为好;但另一方面也存在着一些美中不足的地方。在内容方面第一,在初中动物学课本中,讲到益鸟和害鸟,举益鸟的主要种类时,提到“一窝燕子一个夏季可能吃25万个昆虫(排列起来长达2里)”,这种估计是不够正确的。我们可以参看苏联鸟类学家布拉戈斯克洛诺 The junior high school zoology textbooks published in 1958 are better than the previous textbooks in terms of content compilation and selection of the drawings, but on the other hand, there are some places that are out of the bounds. In terms of content, in junior high school zoology textbooks, referring to the major species of Yick Bird and Bird, Yick Yick, mentions that “a swallow may eat 250,000 insects (up to 2 miles in a row) in a summer” This estimate is not correct enough. We can look at the Soviet ornithologist Blagos Cronos