I had been telling him about how the crows would gather in my yard at twilight when I lived on McPherson. It was a massive yard with dozens of huge mature trees and hundreds of crows came to roost every evening at the very tip top of the trees. Crows roost communally in the fall and winter.
As I was telling this tale I noticed we were under a flyway with thousands of crows overhead. I asked Darren to stop so I could get some photos of them: