Raven (Corvus corax) I have often seen this bird flying over the College and it is usually its very deep rasping croak that directs my gaze upwards. They are of course famous for their residence in the Tower of London where they are kept to prevent destruction of the White Tower and a tragedy befalling England. They are thought to be very intelligent since they can be taught to do tricks, solve puzzles and even imitate human speech. They are omnivorous birds eating seeds, animals, garbage and carrion. They nest in tees or ledges and the individuals seen here nest in the mountains behind the college.