Record breaker: Bird flies 12,000 km non-stop from Alaska to New Zealand, breaks world record

Record breaker: Bird flies 12,000 km non-stop from Alaska to New Zealand, breaks world record

The bar-tailed godwit set off from south-west Alaska on 16 September and arrived in a bay near Auckland 11 days later

A bar-tailed godwit broke the world record for non-stop bird flight with a 12,000-kilometre journey from Alaska to New Zealand in 11 days. Scientists tracked its journey by harnessing a satellite tag on its lower back. "They're designed like a jet fighter. Long, pointed wings and a really sleek design which gives them a lot of aerodynamic potential," scientists said.

The bar-tailed godwit set off from south-west Alaska on 16 September and arrived in a bay near Auckland 11 days later, having flown at speeds of up to 55mph.

Record breaker: Bird flies 12,000 km non-stop from Alaska to New Zealand, breaks world record
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The male bird, known as 4BBRW in reference to the blue, blue, red and white rings fitted on its legs, also had a 5gm satellite tag harnessed on its lower back to allow scientists to track its progress. It was one of four to leave together from the Alaskan mudflats where they had been feeding on clams and worms for two months.

The male bar-tailed godwit, whose standard weight is between 190gm and 400gm, can double in size before a long flight but is able to shrink its internal organs to lighten the load.

After leaving Alaska, the birds headed south over the Aleutian Islands and on to the Pacific Ocean. The journey is thought to have been prolonged by strong easterly winds, which pushed the group towards Australia.

The satellite recorded a point-to-point flight of 12,854km but the scientists believe that once rounding errors are taken into account the journey will have been around 12,200km. The previous longest recorded non-stop flight by a bird, of 11,680km, was recorded in 2007.

Record breaker: Bird flies 12,000 km non-stop from Alaska to New Zealand, breaks world record
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It is not certain but it is believed the birds do not sleep on the journey during which they flap their wings most of the time.

The birds were among 20 caught and tagged by the Pūkorokoro Miranda Shorebird Centre, in the Firth of Thames, south-east of Auckland, in late 2019. They are expected to start the return flight in March, flying across Asia where they will feed for a month around the Yellow Sea, before returning to Alaska.

Scientists with the Global Flyway Network believe the route across the Pacific functions as an “ecological corridor” rather than a barrier to the birds; providing a wind-assisted passage relatively free of the risks of disease and predators.

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