They and 16 other young birds had just been transferred from the kakapo stronghold of CodfishIsland (Whenua Hou), an island right at the bottom of New Zealand, to Chalky Island (Te Kakahu) in Fiordland.
Having found out what caused the birds' deaths, the DoC has swung into action to give all the 24 kakapo remaining on Chalky Island life-saving antibiotics, and to check on the well-being of those living on CodfishIsland.