Assigning a currency value to wildlife has been advocated as a conservation action for some threatened species and taxonomic groups for several decades. This paper describes the results of a 3-year program targeting eggs and nestlings of the endangered Carnaby’s cockatoo (Zanda latirostris). Although fledgling production was not adversely affected, commercial value was reduced by 38% after 3 years, and by 61% after 22 years. This program shows that an endangered cockatoo species can be successfully collected from the wild.

Gilbert’s potoroo (Potorous gilbertii) is the world’s rarest marsupial. It inhabits Two Peoples Bay Nature Reserve in Western Australia. Little was known about this species before it was presumed extinct at the beginning of the 20th century, so we share ecological and genetic knowledge learned over the past 30 years since its rediscovery.

This article belongs to the collection: The Natural History of Two Peoples Bay Nature Reserve, Western Australia.