because she will be staying in here for quite some time. 因为它将在树洞中度过很长一段时间

30. ..the female does something truly bizarre.
    雌冠斑犀鸟的举动异乎寻常
31. She pulls out her flight feathers.
    它将羽毛扯了下来
32. She is not going to need them
    雌鸟不再需要羽毛了
33. because she will be staying in here for quite some time.
    因为它将在树洞中度过很长一段时间
34. It's not only a little cramped,
    这里不仅狭小
35. it also lacks basic amenities.
    而且家徒四壁
36. Now her partner brings her a beakful of mud.
    现在雄鸟衔来了泥

来自《行星地球 第三季 第五集 Planet Earth S03E05 森林》第 33 行