A Veiwing Of A Hawk

I saw a hawk today at work. It is quite an alpha bird. Their were a flock of pigeons in the yard at work. When they notice the hawk they made way. The hawk appeared to be hunting for food because he chase the pigeons on till he caught one and he did. He feasted on the pigeon he caught. Hawks travel alone no company at all. It is said to be very territorial of it's area. Other birds live together in harmony, they share food and warn each other of danger and they travel together. The hawk make a very interesting bird. It seems socially isolated.