RANST, Belgium — Belgium’s once pastoral pastime of pigeon racing has come to this: Drones swoop over lofts where valuable birds are housed to look for security weaknesses, laser sensors set off ...

An imaginary race track in the sky and a sense of knowing where to fly is all a pigeon needs to find its way back home. Nestled out in rural Andalusia, three tiny yellow houses in Denny and Jeannine ...