This week’s been a very special one for the ospreys of Tweed Valley. The female chick on the back up nest being monitored on camera has been fitted with a GPS satellite transmitter. Roy Dennis from the Highland Foundation for Wildlife and Dave Anderson from Forestry Commission Scotland, based at Aberfoyle, travelled to the Borders to carry out the task of fitting this specialised tracking kit to the young bird.
Tony Lightley, the Heritage and Conservation Manager for FCS, South of Scotland District had organised for this to be carried out, as well as for fitting the young birds with the alpha numeric Darvic rings for identification in the field.
Follow the bird
The small transmitter was fitted like a small back pack to be carried between her shoulders. The device is held in place by webbing stitched together by cotton which should hold for the length of the satellite transmitter battery lifetime of 4 years. The battery itself is solar powered and transmits a GPS location of the bird anywhere in the world. Roy Dennis, the leading authority on ospreys in the UK, will receive the details of all of the bird’s movements and present the findings in regular updates on his Highland Foundation for Wildlife website, where we will all be able to follow this very special bird’s journey.
The website also has details of all the other satellite tagged birds currently being monitored, including a Golden Eagle named Roxy that originated in Galloway but has chosen territory in the Borders to range in for the past few years, but has not successfully bred yet.
The ‘back up’ nest chicks have been fitted with the BTO rings on their right legs and Darvic rings on their left legs. The female with the satellite tag has leg ring FK8 and the male is leg ring FK7 in white lettering on a blue background.
Fledged and exploring
The chicks have fledged but are still using the nest site to feed. The latest footage retrieved from the camera revealed the male chick doing comedy bounces and wing flaps prior to his first trip from the nest. The most amazing information has been transmitted back from FK8’s transmitter that she’s made a maiden flight trip to check out the River Tweed.
It‘ll be fascinating to follow her journey and to find out for the first time ever, exactly where an osprey from Tweed Valley goes to on her migration and the route that she takes. We’ll find out where she stops over for breaks and fishing trips and how long it takes for her to reach her over-wintering destination.
It’ll be a few weeks yet before the ospreys migrate to Africa for the winter. In the meantime it’ll be interesting to see just how far the young female osprey goes to explore her surroundings and to learn to hunt before the big trip.
The camera link to the main nest is still live and is being checked regularly for any signs of osprey activity there. This has revealed that white leg SS is still around and the new female is still sticking close by him. Both where briefly at the nest on Monday, he was in the nest and she was on the perch. He was still displaying mantling behaviour and seems very unsettled by her presence but undeterred, when he flew off, she followed him in hot pursuit!
The visitor centres
Both centres at Glentress Forest and Kailzie Gardens have the latest footage from the new ‘back up’ nest on the screens so that visitors can see the chicks before they fledged and being fed by mum (green ring N0) after Dad, (yellow ring 8C) drops in a good sized fish.
Close observation will reveal the small aerial sticking up from the satellite transmitter back pack on the female chick. This is a very fine and flexible wire which bends and flips back into place so that it cannot become snagged on anything as the bird dives into water and flies about.
Thanks for reading!