I found the article very interesting James.
Somebody else posted the same article on the main "Birds and Birding" subforum and it near started a riot! Good to see we're more civilised on here
I got my first winter sighting of a Redpoll today with the vivid red head in the Hawthorn but gone by the time I got camera. I will be obsessed looking now till I see him again ................ and hoping for Siskins to return also.
Nice birds, good luck.