当然不是要全部符合才算是鸟类,符合越多种,就越像鸟,大概是这样,所以一般来说,鸵鸟不会用来当作鸟的典型例子吧。
dāngrán bùshì yào quánbù fúhé cái suàn shì niǎolèi ,fúhé yuè duō zhǒng ,jiù yuè xiàng niǎo ,dàgài shì zhèyàng ,suǒyǐ yībānláishuō ,tuóniǎo bùhuì yònglái dàngzuò niǎo de diǎnxíng lìzi ba 。
Of course they don't have to meet these conditions in order to count as a bird, it's just the more that you meet them, the more like a bird you are, that's more or less how it is. So normally ostriches wouldn't be taken as a classic example of a bird.