Doug, this event was just south of Klamath Falls, I have also experienced similar fly offs in Sacramento River Preserve but This is probably the best photograph I have of this behavior. Usually happens when an Eagle is nearby.Oh my God!!! Where was this, Roger?
Alan, When I was there and previous times, they talk. It is a hum of geese; it ebbs and flows and then it will crescendo to a higher pitched hum. sometimes it just will fall back but when it reaches the highest level it is a signal they will fly. That is the best description I can give you other than it always causes me to have, no pun intended, or maybe, goose bumps.That had to have been an incredibly noisy fly off event. Amazing numbers of geese.
Roger, totally abstract, I love it.