Although wading through damp heather and laying rat traps may not be everybody's idea of a fun weekend, many have already come forward.

BBC: Calf of Man islet rat-cull project calls for volunteers

Pereda once asked him how he hunted them, and Don Dulce told his gaucho to show the lawyer one of the traps, which was halfway between a birdcage and a rat trap.

NEWYORKER: The Insufferable Gaucho