That is when females will look for a mate. 只有那时 雌鸟才会寻找配偶

59. A male spotted bowerbird.
    一只雄性斑大亭鸟
60. For the last two months,
    在过去的两个月里
61. he has been busy in anticipation of brief rains...
    它一直在等待短暂降雨
62. That is when females will look for a mate.
    只有那时 雌鸟才会寻找配偶
63. So he's built a bower, a sort of theatre,
    为此雄鸟搭建了一个亭台 类似一种剧院
64. a stage on which he will dance with a female, if she is willing.
    如果雌鸟愿意 它们将在这个舞台上共舞
65. He decorates the entrance with piles of empty snail shells and bones.
    雄鸟用成堆的蜗牛壳和骨头点缀舞台入口

来自《行星地球 第三季 第三集 Planet Earth S03E03 沙漠与草原》第 62 行