It is
migration time and our satellite-tagged Whimbrels have set off as well! Three
of our Whimbrels departed Australia between 16-20 April and they are now in the
northern hemisphere.
KS was the first bird to depart Broome on 16 April. The last signal transmitted from Broome was on 16 April at 1am. By the time the satellite transmitter switched on again to transmit data to the satellite on 18 April morning, KS has already flew nearly 2,000km to cross the equator.
Photo
1. KS photographed in Yilan County, Taiwan on 26 April 2017 (Photo by LIN Jer
An)
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After 3 days, on 22 April, it
decided to land on Xihcao wetland in Tainan County, Taiwan, a nature reserve set
up for the protection of Black-faced Spoonbill and shorebirds. Habitats there
include tidal mudflat, mangrove and saltpan. There has previously been a few
resightings of NW Australia flagged Whimbrel in the west coast of Taiwan but
not from this area.
The
real surprise comes 4 days later (26 April) when KS was resighted and
photographed at the north-east coast of Taiwan in Yilan County, even before the
satellite signals transmitted through to reveal its movement. KS was observed
foraging with a flock of seven other Whimbrels in one of the river channels in Xiapo
wetland, which is a popular farmland area for waterbird watching among local birdwatchers.
Excellent
photos taken by Mr. LIN Jer An (above) show KS with its satellite transmitter intact on
its back. In AWSG’s previous shorebird satellite tracking projects, we had faced
problems with satellite transmitters ceasing to function when a bird was part
way through migration. Knowing that both the bird and the transmitter are both
in good condition two months after deployment and that they have made a long
flight >4,500km is a REAL delight.
Fig 1.
Movement of KS from west to east coast of Taiwan
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KU
was not too far behind KS and departed Broome just a day later on 17 April afternoon.
Within a four-hour period, KU has made a 200km flight with average speed of
50km per hour. The long flight continued until 23 April when KU landed in
coastal area in Xinghua Bay, Fujian Province, China, an extensive mudflat area
with a peak count of 16,000 waterbirds (China Coastal Waterbird Census, 2007) whichis yet
to receive any protection status.
Fig 2.
KU landing location in Xinghua Bay, Fujian Province, China.
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JX was
our last bird to receive a satellite transmitter and is also the last bird to start
migration, departing Broome on 20 April. In 4-day time, JX travelled over
3,000km with an average speed of 31km per hour and reached Malanut Bay in
Palawan, the Philippines.
Photo
2. JX photographed in Roebuck Bay on 26 March 2017. Photo: Jack Winterbottom
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Fig
3. JX migration to Palawan, the Philippines.
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Looks like KS, KU and JX will all stay for a while where they are for replenishing after their long flight, and will depart again
for their next leg of migration hopefully in a few days time.
Last, but not least, LA, our 2-year old Whimbrel, is still around 40-50km south of
the Anna Plain beach entrance at Eighty Mile Beach. Now, we are almost certain
that it will stay in Australia in its second year of life.
Fig
3. LA movement at 80 Mile Beach.
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As of May 1st.
Migration tracks of our Whimbrels: |
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