Between November 12 and 29, I went on an expedition to the Subantarctic islands of New Zealand and Australia. Two and a half weeks on a ship through the Southern Ocean, hopping from island to island, watching birds and making photographs, away from civilization… it was a true adventure. I’m telling here the tale of this voyage.
In this phenomenal voyage, the Chatham Islands were in a category of their own, not the least because there we saw our first “regular” human inhabitants (I’m not counting the researchers on Macquarie here) in almost two weeks. House! Fields! Sheep (beurk)!
While the main island looks a lot like mainland New Zealand, where pastures have replaced the forest, the outlying groups offered more variety; some islets have even managed to remain predator-free! We encountered many endemic species, but the Black robin (Petroica traversi) eluded us. This small black bird has an extraordinary story, for in 1980 only five birds remained on Little Mangere, including only one breeding pair. A commando of conservationists managed to bring the species back from the brink by collecting eggs and giving them to Tomtits (Petroica macrocephala) for them to incubate and raise, forcing Black robins to lay more eggs and therefore increasing breeding success; that technique is called “cross-fostering”. Now 250 birds roam South-East Island and the Mangere Islands. This success story shouldn’t make us forget that, without having their habitat strictly protected, these birds would still be in grave danger (or extinct, probably).