Nuisance pigeons being fed birth control at a Vancouver SkyTrain station

Chances are if your SkyTrain stops inexplicably and then starts moving again in a couple of minutes — not even enough time to find out on Twitter what the heck’s wrong — that a pigeon has tripped an alarm.
“Even a feather can set off a laser alarm,” Jill Drews, senior issues management advisor at TransLink, said. “And when an alarm goes off, we have to stop the trains.”
TransLink has undertaken the usual measures to keep pigeons away such as spikes and n