Threats to Chatham Island tāiko

The arrival of mammalian predators, particularly cats, pigs, and rodents, the introduction of weka, and the loss of forest habitat are likely to have been the main causes of tāiko decline within the last 100 years. Stray dogs and trampling of burrows by domestic and feral stock are likely to have been additional threats.

The key present-day threat to tāiko continues to be predation from cats, pigs, weka, and rodents during the tāiko breeding season.