I came across the Kenku last week and I really like them. The basic idea is that these are humanoid avians. They are great mimics, infact they have not language of their own but rather string learned phrases together from what they have heard but all in perfectly mimicked form of the original voice. They are also natural thieves.
I am debating as to whether they should be a monster or a race when converting them over to Rolemaster. As a monster they are rather weak but as a race they require a lot more effort from the GM to prepare them before time.