- A town in New Zealand's South Island has built an underpass especially for penguins
- The little blue penguins -- the world's smallest -- are in decline due to human activity
Auckland, New Zealand (CNN)It's not easy being the world's tiniest penguin.
New Zealand's blue-feathered korora -- or little penguins -- are more comfortable at sea than waddling on land, where the perils of cars, dogs and inquisitive humans await.
Found along the length of the South Pacific country's coastline, their numbers are in decline but the South Island town of Oamaru has stepped in to make the birds' lives easier by building them their very own underpass.
The tunnel below the road is a first for New Zealand's little penguins and was originally conceived by marine biologist Philippa Agnew, a researcher at Oamaru's Blue Penguin Colony.
The colony's general manager Jason Gaskill told CNN that the town council, local tourism body and civil works companies got on board and that a number of companies donated labor and goods to see the underpass built.
"I would say that the project itself has caught the imagination of a lot of people -- the local community included," he said.
The penguins fish at sea but nest on land and Gaskill said that at this part of Oamaru Harbour -- by the colony-- the birds had to cross a busy road to get to their chicks once the sun went down.
Hundreds of little blue penguins nest in boxes at the colony where special lighting is in place to allow the reclusive birds to be observed by visitors.
But car lights are a different story, with white light blinding the penguins, Gaskill said, and making the road between the sea and colony potentially hazardous.
"It's a well-used and well-travelled road, particularly in the summer when the penguins have their chicks and their movements are highest," Gaskill said. "At most of the other places where the penguins come ashore there isn't the volume of traffic or there are no roads. So it was kind of a special case."
The area's popularity with the penguins also made it popular with tourists who wanted to see the birds, which are just under 30 centimeters (12 inches) tall and weigh around a kilogram (2 pounds).
"There was potential danger there, so what we wanted to do was create an environment where people, penguins and vehicles could move freely. "
The underpass took around three weeks to build and was completed in September.
Gaskill said the feedback since then had been "almost universally positive," and most importantly the birds had taken to it, with up to 20 ducking below the road each night.
"Penguins are quite habitual, so once they've discovered that there's a safe route they'll tend to use it."
John Cockrem, Professor of Comparative Endocrinology at