It's a late Saturday morning and a dozen men are hanging out in a scraggly playing field in Borobudur, Indonesia. There's a shaded dugout along one edge, and a worn patch of dirt in the center that makes this look like a lopsided baseball diamond.
It's training day at the Lapak Netral pigeon racer club.
To race, you must have a pair of birds. Pigeons, it turns out, mate for life. The male bird is the racer, and returning to the female provides his motivation.
The males are piled into a cage and ferried by motorbike to a release spot about 2 miles away.