In 1972 or 73, I went to a game against Purdue AFTER a blizzard. The temperature was around 15 below. The snow was so deep that in virtually every field, in almost the exact center, there was a brace of pheasants gathered. Their hiding holes along the fence rows were drifted with 3+ feet of snow so they huddled in the middle to be able to see in all directions, feed on the stray corn, and fly away from any predators or hunters. Must have seen a thousand or more on the hour drive to C-U that took 1.5 hours instead.
Of course, if I had brought along my 12 gauge shotgun, there would not have been a single bird in sight. Murphy's Law.