29．On the other hand，when it comes to substantive--particularly behavioral-information，crows are less well known than manycomparably common species and，for that matter，not a few quite uncommon ones：the endangered California condor，to cite one obvious example．

(特殊结构for that matter)

另一方面，当涉及实质性的，特别是行为方面的信息时，乌鸦就不如许多比较而言很普通的鸟类那样为人所知；而且，也不如许多很不寻常的鸟类，举一个明显的例子，如像濒危的加利福尼亚大秃鹫那样为人所知。

分句1. when it comes to substantive--particularly behavioral-information

分句2. crows are less well known than many comparably common species and, for thatmatter，not a fewquite uncommon ones：the endangered California condor，to cite one obvious example．