Last week I received details of 2 interesting Blue Tits that we (Sorby Breck Ringing Group) had ringed at the Derbyshire Wildlife's Trust Avenue Washlands Reserve.
The first bird was first caught in March 2010 as a 5, i.e. it had been born in 2009. It was then re trapped in February 2011 and then "disappeared" for the next 6 years, before being re caught on 5th February 2017. If it's still alive, it will be in its 9th year by now.
The second bird was first caught in October 2012 and aged as a 3, i.e. born that year. It was caught again once in 2012, 4 times in 2013, once in 2015 and then, most recently, on 4th February 2018. This last retrap means that this bird has now entered its 6th year.
According to BTO website (see here), the longevity record for Blue Tit is currently 10 years 3 months and 10 days from ringing, so hopefully these 2 birds might become contenders for "record breakers" in the next few years.
Welcome to my blog all about my birdwatching, wild bird ringing activities and moth recording at Linacre Reservoirs, Derbyshire; in Great Britain and abroad.
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