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How did they eradicate rats from such a large area?  Just shitloads of poison?
Some good news for a change. :) >

There is plenty of good news in conservation, it just gets overshadowed by doom and gloom because negativity gets more clicks. Like most conservation successes, the restoration of native songbirds to these islands is the result of years of humble, quiet, continued efforts by ordinary people making incremental progress. This makes for boring headlines and bad clickbait, so these positive stories rarely leave the local press. >

This is giving me life fuel. >

Huel™️ >

They (NZ govt) have eradicated rodents from a lot of their islands with amazing results. They had to be careful about endemic birds and sometimes captured them before baiting but the results speak for themselves. The largest eradication attempted was Campbell Island at 113 square kilometres and it was successful.  Even Australia has tried it with eradication successful on Macquarie Island and more recently, Lord Howe Island, which is inhabited.