Argument: Sterilization vaccines can be used instead of killing Kangaroos
Kangaroo Culling on Defence lands – Fact Sheet" - "Defence is implementing an experimental form of fertility control at the fenced Belconnen Naval Transmitter Station, based on research by a partnership involving the University of Newcastle and ACT Parks, Conservation and Lands. The research is aimed at developing a species-specific, orally delivered immunocontraceptive vaccine for eastern grey kangaroos. The vaccine is expected to provide sterility for at least three years." Sterilizing kangaroos is the most humane way to curb population growth.