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Since 2008, 155 kea have been monitored through ten 1080 operations with 20 (12.9%) recorded fatalities.
Recent research at Okarito showed that following the 1080 pest control operation in 2011 kea nesting success in the treated area increased from 51% to 100%. Nesting success of 38% was recorded in a nearby untreated area. The following year 69% of nests in the treated area succeeded, compared to 1% in the untreated area. The Kea Conservation Trust is carrying out similar nest monitoring at Otira.