Etihad Stadium/Telstra Dome/Docklands

Can anyone shed any light on a question I have been thinking about...
When the roof of 'The Dome' is open for a game (or half a game in the Crows v Bombers game last week...) and the stadium fills up with seagulls, how do they get the buggers out at the end of the day ???
When the roof of 'The Dome' is open for a game (or half a game in the Crows v Bombers game last week...) and the stadium fills up with seagulls, how do they get the buggers out at the end of the day ???