The most threatened gull on Earth has set up a colony in a derelict Christchurch city centre site.
About 300 black-billed gulls, tarāpuka, have established a colony with about 130 nests in the half demolished and flooded foundations of a former office block on Armagh St.
The birds, which can only be found in New Zealand, are nesting on the concrete beams, mating and washing in a flooded basement surrounded by protective fences.
