During this video, Chris and Matt, will feed the birds with The Geek Groups Pneumatic Cannon. They charge it up with a small air compressor, although it has been rated for up to a few thousand PSI.
The Geek Group's Youtube channel is a place of awesomeness, It has wonderful videos, of marvellous things. You should check it out, here
. You can also visit their website, and the forums here
. Why not join? We'd love to see you in there.