I am certainly no bear expert, but you should be able to put the corn out in the morning, and the birds and squirrels would probably be done with it by nighttime. If not, you could pick it up that evening. I know in my area, bears only seem to be a problem at night, so I guess they are nocturnal.
When you start to cook, as when you begin to live, you think that the point is to improve the technique until you end up with something perfect, and that the reason you haven’t been able to break the cycle of desire and disillusion is that you haven’t yet mastered the rules. Then you grow up, and you learn that that’s the game.
Adam Gopnik, The New Yorker