It seemed like there were a million Snow Geese spread out over Thompson Lake at TNC's Emiquon Preserve on the last weekend in February.
On Saturday Feb 26, we found thousands of birds on Thompson Lake. We stopped at the only shoulder on IL 78 Hwy, across from Dickson Mounds (County 9) Road. It was overcast and foggy in the distance, but we couldn't miss this large flock of geese.
All of a sudden, they rose from the water, circled around, and then settled down again.
On Monday, Feb 28, I went back and the geese put on an even more spectacular show.
I made this video of the geese rising en masse:
Every time I checked back last week, there were geese on the water and/or flying overhead.