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)

Sunday, 18 December 2011

Dunno what you been up to?

We are told the prime value in ringing comes from the data that can be used in population modelling and much of the significant information that the BTO produce falls under the Integrated Population Modelling programme and thus retrap and recovery data are much appreciated by ringers, even if sometimes, such records lack the glamour of records of oddities - but at this season, most of us know that not all that glitters is gold.

Fitting this is a record of a Dunnock, caught as a juvenile in September 2006 in Hala and caught by a cat five years later in November 2011 in a garden less than 100 metres away. Interestingly, this bird had never been recaught in numerous ringing sessions since then. Short scale movement is the norm for this species (95% of recoveries are within 5km of the ringing site) but this does not mean that records ssuch as this are dull - as Ian Hartley writes in the Migration Atlas, "there are still unanswered questions about the species' local movements"!


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