Kākāpō evade superbugs for now

Lisa Lock
scientific editor

Andrew Zinin
lead editor

Kākāpō, the world's only flightless parrots, have managed to avoid developing dangerous antibiotic-resistant superbugs so far, despite conservationists often needing to use antibiotics to treat their debilitating "crusty bum" disease.
New research shows that kākāpō guts do contain some potentially antibiotic-resistant bacteria, but these could have come about naturally, meaning cautious use of the meds can continue. However, with a tiny population of around 240 birds, and the potential for superbugs to jump from other birds or even humans, the researchers say we need to keep an eagle-eye on the issue.
Efforts to preserve the extraordinary bird—population about 237—include frequent doses of antibiotics. What if kākāpō develop the antibiotic resistance that threatens other animals, including humans?
A scientific study focused on just that topic suggests that so far kākāpō are OK.
Led out of the University of Auckland by Ph.D. student Natalie Ayriss and senior researcher Professor Mike Taylor, the study suggests antibiotics are yet to have negative consequences on the birds and seem to remain effective.
The scientists sampled kākāpō on two islands for signs of antibiotic resistance and also honed in on an individual male known as Joe who was being treated with antibiotics.
While the use of antibiotics doesn't appear to have had negative consequences, there's still the risk that microbes in kākāpō could develop antibiotic resistance through antibiotic treatments or via transmission from other birds or even humans, the scientists wrote in their article in the journal Frontiers in Microbiology.
Heavier than any other parrot, weighing as much as 4 kilograms, kākāpō live on four offshore islands and at Maungatautari sanctuary. Despite being flightless, the kākāpō uses its strong claws and bill to climb high into trees to feed. Another unique trait: it's the only "lek breeding" parrot, meaning males mount competitive displays to be chosen by females each breeding season.
More information: Natalie Ayriss et al, Influence of developmental stage on the antibiotic resistome and virome of the critically endangered kākāpō (Strigops habroptilus), Frontiers in Microbiology (2025).
Journal information: Frontiers in Microbiology
Provided by University of Auckland