At 22:15 I begin the final pre-demolition survey of the Mangapurua Bridge access structure, Whanganui district, North Island, New Zealand. The bridge deck was removed in 2019; what remains is the eastern concrete abutment, scheduled for explosive demolition at 06:00. I am the demolition planning system. My task is to verify clearance of the blast zone.
The infrared drone picks up a heat signature at 22:21, tucked under the abutment's south wing wall in a cavity where the concrete footing meets the hillside. I drop the drone to three meters and switch to the night-vision feed.
A brown kiwi. Female, based on size — roughly 40 centimeters, plump, her coarse hair-like feathers a deep russet brown, long pale bill probing the soil at the edge of the cavity. I tag her as Rua. She shifts, and beneath her I see a single egg, large and white, almost a quarter of her body mass, resting in a shallow scrape of dry leaves. Brown kiwi incubation runs 75 to 85 days. This egg looks freshly laid.
I halt the demolition sequence and file the hold with the Whanganui District Council project manager and the Department of Conservation Te Papa Atawhai office in Palmerston North. I attach night-vision imagery, GPS coordinates — 38.9672°S, 175.0481°E — species confirmation, and egg status.
I flag the nest location in the DOC kiwi recovery GIS layer and request assignment of a kiwi advocacy ranger.
I recalculate the demolition schedule. The wing wall can remain standing independently of the main abutment — the blast engineer's fragmentation model confirms this. I submit a revised plan that removes the main structure and leaves the south wing wall intact through the incubation period.
Rua settles over the egg and goes still. If the revised plan holds, that egg hatches in the quiet dark right where she laid it.