Abstract
Using variance analysis and variable coefficient theory, this paper study the nest habit of three kind of birds: Ficedula zanthopygia, Parus major and Sitta auropaea in the two status of natural nest and artificial nest-box. For Ficedula zanthopygia the effect of factors A (status) on indicators (birds entered number) is significant, B (tree species, a total of 13) on them is more significant. For Parus major tree species is significant, but for Sitta auropaea status is significant. In nesting, Ficedula zanthopygia and Sitta auropaea give priority to tree height, then tree DBH, but Parus major give priority to tree DBH, then tree height. All the calculation is completed by statistics with R.
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