I have a bird feeder in front of my house and I fill it up with this generic bird seed that has many different kinds of seeds. I’ve watched the birds come up there and eat but then they take the corn kernels and toss them out. A bunch of the corn has fallen on the ground and now I have corn growing!
We have some little sparrows that just go in there and motorboat the bird feeder, so there’s plants from the seed growing all over under our feeder haha. No corn though, that is pretty cool!