Ringing aims to understand what is happening to birds in the places they live and how this affects population increases and decreases. This knowledge is vital for conservation. It also gives information on the movements individual birds make and how long many live for. BTO.org
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Monday, 19 October 2015
CES data set off
Tony has now sent off our CES data to the BTO. This was our 35th year of CES (Llangorse is one of the longest running sites, having started in the first year of the project). 2015 totals were 152 adults and 267 juveniles. It was our third best year for adult captures (after 1989 and 2004), but juvenile captures were only the eighth highest, and when converted (total per 100 adults) was only an "average" 176. Amongst the individual species, Robin, Chiffchaff and Long-tailed Tit has a productive season, whilst Garden Warbler, Willow Warbler, Dunnock, Great Tit and Bullfinch didn't do so well.
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