New Zealand wildlife-tracking company Sirtrack has been sold to a Canadian company, making it part of the biggest wildlife telemetry company in the world.

Hawke's Bay Police are urging people to use common sense after recent "stupidity" put rescuers' lives at risk during two dangerous rescue missions.

Canadian oil company Apache has been talking up the prospects for onshore oil finds on the North Island's East Coast and is trying to play concerns about fracking and the local environment.