Belle de jour

"The breakthrough was using "Judas" goats fitted with electronic collars to pinpoint the elusive herds.

(Pour éradiquer la présence des chèvres aux Galapagos.)

"Every month they would go back, shoot all of them except the Judas, go back a month later, shoot again and so on, until it was just the Judas left. Then it was shot," said Nicholls."