It's really hard to decide which pictures to post. This picture shows the Snow Geese in flight. If you look very close, you will see that the entire background is filled with birds.
I did a little calculation. Supposedly there are 128,000 Snow Geese (plus 490,000 Ducks) at the Refuge. The geese weigh about 6 lbs each. So we have 768,000 lbs of geese in flight. The town of Fairfax (CA) has a population of 7,300. I figure the average weight (men, women and children) to be about 140 lbs. That's about 1,000,000 lbs. Thus the geese weigh roughly 3/4 as much as the population of Fairfax. But the Fairfaxians can't fly. Thought you'd like to know.