A fascinating paper on the results of twenty four years of ringing and observations on Choughs around the coast of North Wales from the Llyn peninsula down to Aberystwyth, has just been published by Cross and Stratford in the current issue of 'Birds in Wales' - (Welsh Ornithological Society vol 12, no 1, 2015). It emphasises the value of reporting all observations of these iconic birds of our local coastline. It is available at the following link :-
https://dl.dropboxusercontent.com/u/41908507/ruffled%20feathers%20blog%20files/Lleyn%20Chough%20paper.pdf