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)

Thursday, 22 October 2015

Cetti's on the Move

Cetti's Warbler  has only recently colonised our area.  We first ringed one in 1995 then singles in 2007 & 08. But from 2009 on  we averaged 5 or 6 annually until last year we ringed 16. To date we have only caught 39 birds but we have had two recoveries and recaptured 2 birds ringed elsewhere.
The most outstanding of these is shown on the map it was ringed at Leighton RSPB on March 13th 2010 and  found breeding at Farlington Marsh Hampshire on 25th April 2011 and again on several dates over the next two years. It is one of the longest distance recoveries within Britain.

Our most recent recovery is  as interesting, it was ringed at Wood Walton Fen  Cambridgeshire  on September 2nd 2015 and caught at Leighton Moss 259 km NW 38 days later. Last years control was similar -ringed at Wintersett Reservoir in West Yorkshire and caught 68 days 106 km WNW at Middleton. The other  also showed a similar movement, ringed at Leighton on 4th November 2014 and caught 164 days later at Woolston Eyes in Cheshire.

All  these movements are part of the dispersive tendency of young birds in this species which has contributed to the spread of the species in Britain. Once established as a breeder they appear to be  sedentary- we have had retraps of two birds 3 and 4 years after ringing at Leighton Moss.

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