The most interesting retraps were:-
Robin – two from 2015. Both prefer their own territories, staying put in Orwin's & the feeding site respectively.
Great Tit – the oldest bird was originally ringed in 2012. It's been caught 15 times and seven of those were in November. There do seem to be patterns with resident Brackenhurst birds, with some using the feeders early and others late winter. I suspect over the winter food is most important initially and then towards spring being on a territory starts to supersede this.
Chaffinch – another old male, this time from 2012 and not caught between times.
Totals: 44 birds processed (21 new/23 retrap), comprising: Greater Spotted Woodpecker 1/1, Dunnock 2/4, Robin 0/3, Blackbird 2/1, Redwing 5/0, Goldcrest 1/1, Blue Tit 1/5, Great Tit 1/6, House Sparrow 1 (pit-tagged), Chaffinch 5/2, Yellowhammer 2/0.
Great-spotted Woodpecker (T. Shields)