Argilla planned to stay on for the next few days to care for remaining birds, but newly injured penguins would have to treated by local vets or flown north.
"I truly believe we've made a real difference to the success of care this season," Argilla said.
A penguin being freed after hospital treatment and rehab. Photo/Supplied
Francesca Brown, programme leader at the Otago Polytechnic School of Nursing, said it was an honour to be involved with the project.