In the land down under, feral cats slaughter an estimated 75 million native animals each day. That threat to biodiversity prompted the Australian government to declare it would kill 2 million feral cats over five years starting in 2015. As part of that campaign, officials plan to enlist a drone air force capable of dropping poisoned cat bait on the Australian territory of Christmas Island.

During flight tests last year, a Sky Hero drone performed airborne drops of cat bait that resembles