Net guns 

For example, we have pioneered and developed at-sea capture methods of Procellariiforms which led the discovery of the NZ storm petrel breeding on Te Hauturu-o-Toi (Little Barrier Island). Net guns we’ve developed have since been applied to the discovery of a new species, Pincoya Storm Petrel, Chile, first tracking of a highly threatened species, Beck’s Petrel, Papua New Guinea, study of the ecology of the White-vented Storm Petrel, Galapagos, Ecuador, the first at-sea captures of Black-capped Petrel, Gulf Stream waters, USA, and most recently Balearic shearwaters on the Atlantic coast of France for tracking and physiological research.