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Bird banding really gives an insight into the travels and age of birds around NZ. This Caspian tern sighted at the Avon-Heathcote estuary, Christchurch, was banded 19 years prior at the Invercargill estuary. Not only are many of our birds long-lived but they require a nation-wide network of estuaries over their lives. Such information has important implications for their conservation.
As a footnote Caspian tern have been recorded as reaching 30 years of age in Europe.
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