It's hard to find a bird with a more complex and energetic courtship behavior than the bowerbird.
丁鸟的求偶行为在鸟类中是复杂、有活力的。
It's hard to find a bird with a more complex and energetic courtship behavior than the bowerbird.
丁鸟的求偶行为在鸟类中是复杂、有活力的。
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