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Pacific Golden-plover Satellite Tracking


 

This project is proudly sponsored by the Port of Brisbane and Queensland Wader Study Group who have provided the funding, resources and manpower required to make this project possible.

In 2016 four, 5 gramme satellite transmitters, or PTT’s as they are more correctly known, were purchased from Microwave Telemetry with the intention of studying the migration routes of Pacific Golden-plover between their non-breeding grounds in Australia and their Arctic breeding grounds.

On the 29th December 2016 at Manly, the first two were fitted to a couple of adult Pacific Golden-plover, caught during a shorebird mist-netting session. The remaining two devices will be fitted to Golden-plover at the Port of Brisbane with catching dates between now and March being scheduled to achieve his objective.

The devices sit on the birds back, and are held in place using a leg loop harness. The objective is that the device will produce data on how the birds forage and range locally within Moreton Bay and then provide new information on the northward and southward migration strategies and breeding locations for Pacific Golden-plover that spend their non-breeding season in Queensland. The devices transmit in 10 hour blocks, with a 48 hour rest period during which they recharge their batteries using a small solar panel. The devices last up to two years until the harness degrades and they fall off the birds.

Both birds are well, healthy and foraging normally and both devices are transmitting as expected and providing data on the foraging behaviour of both individuals. The following maps provide information on the Manly birds movements around Moreton Bay, green points are accurate to 250m, blue to 500m, brown to 1000m and red are unspecified accuracy.

Maps will be updated regularly and weekly during the birds migration. If you’ve any questions please get in touch by contacting Jon at janetandjon@hotmail.com

APRIL UPDATE

The birds have still not left as of the 23rd April and unfortunately on the 10th April the transmitter on DAB stopped working after being stationary near Kawana Road wetlands for a couple of weeks. Either the transmitter has fallen off or something has happened to DAB so any sightings of DAB would be gratefully received, particularly if they are post the 10th April.

The other three transmitters are still working well and providing good information on local movements. DAA continues to use the Manly and Wynnum areas during the day and visits the Royal Brisbane Golf course on occasions overnight. BHM is very parochial remaining in the Wynnum-Manly area and BSA is favouring the Wellington Point area so all three are behaving slightly differently and favouring different areas.

Maps for the three transmitting birds are below.

BHM-April-2017 locations

BSA April 2017 locations

DAA April 2017 locations

EARLY MARCH UPDATE

Today we went back to Manly to try and attach the final two transmitters, the catch site at the Port being unusable due to the tide height. After a couple of hours moving birds towards the nets we finally had a catch of 22 Lesser Sandplover, 1 Curlew Sandpiper, 2 Sharp-tailed Sandpiper, 148 Red-necked Stint and 11 Pacific Golden plover, which  included recaptures of DAA and DAB who were looking well and were heavier than when we first caught them to fit their transmitters. We fitted the remaining two transmitters onto two heavy birds coming into breeding plumage, their leg flags are BHM and BSA. Both flew away strongly so fingers crossed they keep their transmitters on and we have four birds to monitor as they migrate northwards.

BHM having its transmitter fitted

FEBRUARY 2017 UPDATE

Not too much change in the last month with the birds still mainly using the Manly and Wynnum areas for feeding and roosting. There are still regular forays to the Royal Queensland Golf club by both birds and also movements further north to the Port and airport shorelines. However, in a mist-net catch at Manly the three Pacific Golden Plover in the catch were noticeably fatter and heavier than normal so the bird are preparing for their migration now. So things will start to get interesting soon! On March 12th we will be going back to the Port of Brisbane in an attempt to fit the last two devices and I’ll provide an update on that if we are successful. A prior attempt in February was unsuccessful with the birds totally outwitting us and no birds caught at all, hopefully we have better luck this time. The maps for the two birds are shown below:-

 

Locations recorded for bird DAA 22/01/2017 to 03/03/2017

 

 

 

 

 

Locations recorded for bird DAB 22/01/2017 to 03/03/2017

JANUARY 2017 UPDATE

We now have nearly a full month of data for both birds. Its a great sense of relief to know that both transmitters are still attached and that the birds are going about their business as normal with a number of visual sightings of the birds and a photograph taken at the Manly roost of one of the birds at high tide.

The birds are both behaving quite differently from each other. DAA has remained very parochial with almost all movements local to the Manly and Wynnum area. DAB on the other hand has been far more mobile. After initially remaining in the Manly/Wynnum area this bird was then recorded on a number of occasions including two consecutive nights on the Royal Queensland Golf Clubs, returning to Manly/Wynnum during the day. The bird now appears to be favouring the Port of Brisbane with several records there on the 18th January and also on the 24th January (not included on these maps).

Why the two birds should behave so differently is unclear and part of the fascination of looking at the detail these devices give, and the insights into the variability in the behaviour of individuals. We will be trying to put the other two devices on Pacific Golden-plover at the Port of Brisbane on the 4th February and I’ll provide an update on how that went in the February summary.


Locations recorded for bird DAA 06/01/2017 to 22/01/2017


Locations recorded for bird DAB 06/01/2017 to 22/01/2017

DECEMBER 2016 UPDATE

The maps below show the initial tracks for both birds showing how parochial they are to their roost site at Manly and the Wynnum foreshore area, at least in their first few days after being caught and tagged.


 

 

Locations recorded for bird DAA 29/12/2016 to 06/01/2017


 

 

Locations recorded for bird DAB 29/12/2016 to 06/01/2017