Awesome idea. I'd wondered about the integrity of cannabis seeds being shat out by birds, but didn't even think of it as a way to spread the seeds to grow random plants...

I would totally do this, one day when I grow again I'll pick a male and female to be my bird seed providers and fill up the feeder full of seeds.

Kinda reminds me of people attaching a pack of seeds to a helium balloon and setting it free.