Science. 1979 Oct 26;206(4417):462-3. doi: 10.1126/science.206.4417.462.
Exclusion experiments show that birds significantly reduce densities of larval Lepidoptera on forest understory vegetation. When insect densities are already low, bird predation may act both as a population regulator and as a strong agent of natural selection.
排除实验表明，鸟类会显著降低森林下层植被上鳞翅目幼虫的密度。当昆虫密度已经较低时，鸟类捕食可能既是种群调节者，也是自然选择的强大驱动力。
