The long-tailed bat population is nationally critical - the same conservation status as our rarest birds - due to predators and deforestation, so Aucklanders were lucky to get a glimpse of a bat – let alone have one tucked under their eaves.
"It's incredibly rare to observe this," he said.
"We're all a bit gobsmacked."
Paris surmised Brad could be a juvenile male who got kicked out of a maternal roost and hadn't joined up with a male roost for breeding season yet.
"This goes to show that the predator control that Whakaupoko Landcare has carried out in the area is having a positive impact on our indigenous biodiversity," he said.
"The great community-led pest-control work that has been undertaken as part of Pest Free Auckland is paying dividends."