I heard on the radio the other day that the twigs and tweeters reckon that the kiwi on the main islands will be 'extinct' in fifty years...like DOC liberating kiwi in a patch of native forest in upper Hawkes Bay some years ago...they were liberating birds where there was NO LEAF MOULD, humus negliable...you cannot just whack up a fence around a patch of bush in which and through which bovines and ovines graze and camp and throw in a few kiwi...while it might make everyone involved feel warm and fuzzy, it doesn't work like that.
Wikipedia has this to say re 1080 and the kiwi...
In 2004, anti-1080 activist Phillip Anderton posed for the New Zealand media with a kiwi he claimed had been poisoned. An investigation revealed that Anderton lied to journalists and the public. He had used a kiwi that had been caught in a possum trap. Extensive monitoring shows kiwi are not at risk from the use of biodegradable 1080 poison.
The poor dog...gets blamed for most stuff...how many kiwi are eaten by humans every year? Now there's a worthy hypothesis:D