Wednesday, 19 June 2013

Further Radio Silence and a Handful of Recoveries

I seem to be apologising a lot recently about a lack of postings and I am doing it again! I have been in the field a good deal of late, but it has been business rather than pleasure. Then over the next week or so there will be more radio silence from me as I spend some time on Orkney. Normal service will be resumed in early July.

We had a handful of recoveries recently from the BTO and two stood out as particularly interesting. Not long distant movements but helping to paint the picture of where birds from local populations move to.

Over the past few years we have had an exchange of birds with ringers in the Isle of Man and these in the main have concerned Carduelis finches, namely Goldfinch, Lesser Redpoll and Linnet. We were recently notified about Goldfinch L141677 that we ringed at Rossall School, Fleetwood, Lancashire on 4th October 2010 and this bird was recaptured by members of the Manx Ringing Group on 10th April 2013. Please see Google Earth image below.

It seems likely that when we ringed this bird on 4th October 2010 it was probably heading south and west to winter quarters and this may have been the Isle of Man. When the Manx ringers caught the bird on 10th April 2013 it was probably heading back to breeding grounds on mainland UK. Interesting stuff!

The second bird concerns Tree Sparrow TS97113 that was ringed as a chick by Paul from one of his boxes near Staining, Lancashire on 20th June 2012 and captured by members of Southwest Lancs Ringing Group at a winter feeding station 19 km to the southeast at New Longton, Lancashire on 16th January and 9th February 2013. See Google Earth image below.

Having fledged from the Staining area this bird was obviously spending the winter further southeast at a farmland bird feeding station near New Longton. It is important to have data like this to help in Tree Sparrow conservation as it gives information on how far birds move to winter and where to locate winter feeding stations or encourage farmers to take up agri-environment schemes to create winter feeding areas on their farms.

1 comment:

S Gray said...

The site at the Dhoon is a new site and already we have had 3 controls you Dumfries and heysham so a nice picture of movement building up down the east coast of the island