Turnstone migration discoveries


This is a ruddy turnstone (and sanderling) video.

From BirdLife:

Ruddy hell: turnstone flies 27,000 kms – twice!!

Mon, Jan 31, 2011

Researchers from the Victorian Wader Study Group – a special interest group of Birds Australia [BirdLife Partner] – have just recaptured a Ruddy Turnstone Arenaria interpres which has completed a 27,000 km round trip migration for the second time.

This is the first time a wader has been tracked with a geolocator on its complete migration in successive years.

The bird had a one gram light sensor data logger (geolocator) attached to its leg. This device recorded where the bird was each morning and evening. In each year the device was attached to the bird in mid April on a beach at Flinders, Victoria, in southeast Australia.

Ruddy Turnstones are a small wader weighing less than 100 grams and spend the (austral) summer months on many of the beaches around Australia. They are one of the family of waders that migrate huge distances to Siberia in Russia to breed.

Researchers have used these data logging devices over the last two years to find out the key stopover locations which are so important for the birds to refuel on their long journey.

Members of the study group include Dr Clive Minton, Ken Gosbell, Penny Johns and Prof Marcel Klaassen (of Deakin University).

“The data retrieved so far shows that the birds generally start their northward migration with an initial nonstop flight of around 7,600km in six days to Taiwan or adjacent regions” Dr Minton said.

“There they refuel on the tidal flats before moving north to the Yellow Sea and northern China. They then make a flight of over 5,000kms to the breeding grounds in northern Siberia, arriving in the first week of June.

“One of the interesting findings is that after breeding, the return journey shows considerable variation, no two birds following the same route. Some return through Asia while an amazing alternate route has been demonstrated by these new results.

“This is a trans-Pacific route where the bird moves east to the Aleutian Islands off southwest Alaska before making the huge journey across the Pacific, stopping only once or twice before reaching Australia in early December.”

The first record of this flight was in 2009 when the bird spent nearly two months in the Aleutians before setting off southward over the Pacific Ocean and making a nonstop flight of 7,800kms to Kirabati before making the 5,000km trip back to Flinders, Victoria. In 2010 the same bird undertook a similar incredible journey, this time stopping off in the Marshall Islands and Vanuatu in the Pacific before returning to Australia.

Turnstones live up to 20 years and such a bird following this 27,000 km trans-Pacific route would have flown over 500,000 kilometres in its lifetime.

Scientists from the Australasian Wader Studies Group of Birds Australia and Deakin University are still puzzling over why individual Ruddy Turnstones use such widely differing routes for their annual migrations. The study highlights the importance of key regions within the flyway. Scientists are concerned about the ability of these and similar birds to cope with the massive habitat changes occurring as a result of large reclamation and urban development projects.

See also here.

Wildlife Extra: 300,000 songbirds killed annually in Sardinia – Anti poaching camps stepped up: here.

Each summer, tens of thousands of birds gather to breed in the wetlands surrounding Teshekpuk Lake on Alaska’s North Slope. The birds that flock to the region—shorebirds, loons, waterfowl and songbirds—do so to take advantage of the brief but productive Arctic summer. The region is so rich in bird life that the Teshekpuk Lake area was set aside for a 10-year period as a “special area” of federal lands. This designation excludes the area from oil and gas drilling during that time—practices which prevail in surrounding lands: here.

New Jersey Shorebird Survey: here.

3 thoughts on “Turnstone migration discoveries

  1. Pingback: Birds and reptiles of the Tokelau islands | Dear Kitty. Some blog

  2. Pingback: Rare sociable lapwings discovery in Uzbekistan | Dear Kitty. Some blog

  3. Pingback: Good red knot news from New Jersey | Dear Kitty. Some blog

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