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兰大胆(Sitta europaea amurensisSwinhoe)是一种常年生活在森林中的益鸟,很喜欢在天然树洞或啄木鸟弃洞中营巢,在缺乏天然树洞的人工落叶松林内,它也进入山雀式人工巢箱中营巢繁殖。一、分布与数量兰大胆广泛的分布于东北林区各类森林中,冬季有时迁到村屯附近。是原始林、过伐林和次生林中常见的森林益鸟。二、繁殖习性1、发情期兰大胆的发情期为4月上旬,雄鸟追逐雌鸟1—2天后,就开始婚生活,且选择营
Sitta europaea amurensisSwinhoe, a perennial bird that lives in the forest, loves nesting in an abandoned tree hole in a natural tree or a woodpecker. In the artificial larch forest, which lacks a natural tree hole, it also enters a tits-type artificial nest Camp breeding nest box. First, the distribution and quantity Blue bold widely distributed in various types of forest in the northeast forest, winter and sometimes moved to village near Tuen. Is the virgin forest, over-cutting forest and secondary forest common forest bird. Second, breeding habits 1, estrus blue orchid in bold estrus in early April, the male chase female 1-2 days later, began the marriage life, and the choice of camp