Moreprobable is transported by birds，byaccidental attachment of the seeds to feathers.
更大概的是由鸟类来运输。这个倒装句里面如何有被动语态啊，这还原成不倒装的句子是哪种？我只了解补语倒装是可以把形容词放到句首，名词主语放到句末，但这个transportedby birds难道可以作为主语？
我没找到原文出处，但通过Google搜海外考研、雅思、托福等培训网站发现：
More probable is bird transport, either externally, by accidental attachment of the seeds to feathers, or internally, by the swallowing of fruit and subsequent excretion of the seeds.
通过上下文得知，主表如此倒装是没问题的。真不知是始作俑者是哪个，把好端端一个句子改得不成样子。
