Those cans of food in the duck blind remind me of a funny story I read a few weeks ago in a 1936 National Geographic. They were writing about California and the economy, and were out in a lumber camp where there was a crew busy felling redwoods with drag saws and moving them after they fell with highline cables (actually sad, that was). Anyway they were discussing the trouble bears were giving them in stealing the camp food. One of the lumberjacks spoke up when asked about the bears:
"Sure, they steal our lunch. One day my partner and me hung ours high up on the top of a ladder. A bear got 'em both; he walked away with mine in his mouth, up on his hind legs, and carrying my partner's under one arm, like a man. They're smart; they'll steal cans of jam, but leave the spinach. You'd swear they can read the labels."