Exterior vent on passenger's side near windshield?

[quattro GmbH]

Just got a 325i cabriolet and there's a large rodent nest in the exterior vent on the passenger's side, right under/in front of the windshield. The vent is black plastic of course. How can I gain access to this area? I don't want to break the vent.. if it just pulls up where are the clips located?

[quattro GmbH]

Here's a pic of the vent..

[lbreevesii]

It has some clips. Just get under it with a plastic trim tool and pop it out. Search for it on realoem or pix on google if you need more info.