Up at Marwick Head. On the water I saw two great skuas, or bonxies, scrapping over prey, probably a razorbill or guillemot. Another couple were looking for a chance to nip in and steal the food. Bonxies tend to be unpopular with locals who see them as villains. I don't believe in 'good guys and bad guys' outside of the human race. Saw other birds, including birds of prey, but we are now in the time of year when discretion has to be used when mentioning them, for fear of egg thieves.