They and 16 other young birds had just been transferred from the kakapo stronghold of Codfish Island (Whenua Hou), an island right at the bottom of New Zealand, to ChalkyIsland (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 ChalkyIsland life-saving antibiotics, and to check on the well-being of those living on Codfish Island.