2 p.m. Saturday. Cars, taxis, buses, and dollar vans swarm. Ubiquitous on Flatbush Ave., Brooklyn, dollar vans distinguish themselves from the frenzy of Brooklyn traffic with a fare-seeking catcall: Beep.…
“It seemed like a pastime of a fairy-tale New York that had long since disappeared. But, with a little research, I realized a thriving community of pigeon-keepers still existed in…