Thank you for the most courteous response. I first read Baker's book many years ago, and have a first edition copy on my bookshelf it is very evocative of the winter landscape of eastern England where I now live - and the falcons have made a strong recovery. This photograph is a valued souvenir of a memorable day - and it makes a lovely A3 print!
Best wishes, Nigel.
Peregrine Falcon - Father and Daughter (22)