Oh, Canada

I ran up to Barr Lake yesterday to look around before last night's storm got here. I was intrigued by these flocks, each of hundreds of Canada Geese, who after 15 or 20 minutes in one spot, would suddenly collectively decide to take off, then fly 400 - 500 yards away to another spot on the ice. Who are the goose opinion leaders?

While I was photographing the sequence of this flock coming into their new "better" spot, I heard a sudden popping noise. It took me a moment to realize it was the sound of the ice cracking under the weight of all those geese.