“The population of the world’s heaviest parrot, the kākāpō, has surpassed 300 birds for the first time in 75 years, after a record breeding season triggered by the mass fruiting of a native New Zealand tree.

Ninety chicks were officially added to the population of the critically endangered birds on 1 September, pushing the total to 325 – a record high since recovery efforts began…

Kākāpō, the world’s only nocturnal and flightless parrot, were once abundant across New Zealand. But their population plummeted after the introduction of predators such as cats and stoats. By the 1900s, they were nearly extinct.

A recovery programme was established in 1995 with a population of just 51 birds and has battled challenges with genetic diversity, infertility and poor chick hatching rates. There are three kākāpō breeding populations, all based on predator-free islands off the South Island.

Kākāpō breed only every two to four years when the native rimu trees produce large numbers of berries, so repopulation is slow. This year, after a four-year wait, a bountiful harvest of rimu berries prompted the birds to breed and produce a record number of chicks.”

From The Guardian.