NLRG was formed in 1957 to help in the study of birds in the Lancaster and District Birdwatching Society area. There are currently 12 active ringers. Species currently being studied include: Pied Flycatcher, Bearded Tit, Sand Martin, Twite, Goosander, Oystercatcher and Grey Wagtail. Migration has been studied for 28 years at Heysham. We welcome anyone who wants to observe, help or perhaps wish to become a ringer. Photo: A Heysham-ringed Twite on the Mull of Kintyre (thanks to Eddie Maguire)

Wednesday, 26 October 2011

More sand martin recoveries

Every blog post I make covers one of two things - Oystercatchers or Sand Martins. Tonight is, once again, Sand Martin recoveries. Today's batch from the BTO contained details of 3 birds ringed or controlled by North Lancs Ringing Group.

Paris 6478949 - Juvenile
Ringed Loire-Atlantique, France 18-Aug-2010
Retrapped Whittington, Kirkby Lonsdale, Lancashire 05-Jun-2011

Y150466 - Juvenile
Ringed Whittington, Kirkby Lonsdale, Lancashire 29-Jun-2011
Retrapped Loire-Atlantique, France 09-Aug-2011

These two are pretty unsurprising really given that 60% of the Sand Martins ringed in the UK recaught in Europe are caught in France with a further 30% in Spain.

Perhaps the most surprising bird we had details of today is:

L597913 - Juvenile
Ringed Wintersett Reservoir, West Yorkshire 24-Jun-2011
Retrapped Whittington, Kirkby Lonsdale, Lancashire 29-Jun-2011
99km North West 5km

This is the 5th Sand Martin to be caught on the Lune this year from Wintersett although the only one ringed in 2011. Such a rapid movement in completely the wrong direction for Africa shows that, just like juvenile Swallows, Sand Martins have a wandering phase looking for suitable breed areas before heading south for the winter. With a wing length of 102mm this bird was in the largest 20% of juveniles we caught this year and is currently the best guide we have as to whether the bird is a 'local' bird or a wanderer. Shorter winged birds are more likely to be local as they are yet to be fully grown.

I would also like to congratulate the French ringing scheme for getting the details back of these birds so quickly. Not so many years ago the wait for details of bird ringed in France was several years.

1 comment:

Birdringal-andalus said...

Indeed, it seems that in France Banding Office has recruited qualified staff and therefore the result of good work, my congratulations to this new team. Greetings and congratulations on your blog.
Sincerely Fernando Gavilan.