29.On the other hand，when it comes to substantive--particularly behavioral-information，crows are less well known than many comparably 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 that matter，not a few quite uncommon ones：the endangered California condor，to cite one obvious example.
1和2是并列， 分句1是时间状语， 2是主句，其中包含插入语结构 以及冒号连接的解释说明的成分
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