The Ōtākaro Avon River Corridor’s first wetland is becoming a sanctuary for wildlife, as native birds flock there to nest.
Regular bird monitoring at the Waitaki Street wetland has shown an increase in bird numbers, Christchurch City Council ecologist Andrew Crossland said the wildlife diversity was continuously improving.
The two-hectare wetland was created earlier this year after the council removed sheet metal pilings north of the Pages Road Bridge at Waitaki Street, allowing tidal river waters to flow into low-lying areas.
Crossland said the site was ideal for the new occupants.
“This is the perfect wet, marshy habitat for native water birds, and we’re now seeing several species coming in to roost in preparation for spring.
“Spur-winged plovers are already nesting in the areas, and native black-billed and red-billed gulls are showing interest in the stoney islands."
Residents are being advised to take care when travelling nearby, so as to not disturb the wildlife.
“Loud noises including motorbikes and fast e-bikes passing through the area can disturb the wildlife - as can dogs running off lead.”
Over the summer there will be small changes made to the land's shape to help blend the old stop bank into the land.
Other options such as planting more at the base of the stop bank are also being explored.
This option would, however, limit access to the wetland.
Crossland said the habitat is developing well, with weeds and grasses being replaced by saltmarsh, and temporary ponds forming in old street areas. Native salt-tolerant marsh plants and other forms of wildlife are expected in spring.
“We’re expecting pied-stilts to be nesting on the islands soon as groups have been showing pre-breeding behaviours, and we may see native waterfowl coming in too.”
Nature is being left to take its course within the wetlands, with the council having no plans to aid in the growth of vegetation and wildlife.
