Entries in Nestor meridionalis - Kaka (28)
Virile kaka brothers Bling and Casey, who live in separate parts of Southland, are set to have their wings full for the next two months, having both fathered triplets this season.
The native parrots' intelligence is being put to the test by Victoria University PhD student Julia Loepelt.
Since January, the 28-year-old biologist from Germany has been giving the kaka a series of tasks to challenge them, with a tasty reward at the end.
"The tasks differ in what sort of cognitive abilities are needed to solve it, whether they have to memorise something or have to solve a novel problem," she said.
"You look at whether they are able to solve it, or how fast they solve it, or if they get faster."