Jim McCormac's has written a very interesting article regarding the Cooper's Hawk.It was published in the Columbus Dispatch on Sunday, February 15, 2015.
Wonderful photos and very interesting facts about the role they play in the ecological balance of Nature.
http://jimmccormac.blogspot.com/2015/02/coopers-hawk-is-songbird-assassin.html
More information: http://www.allaboutbirds.org/guide/Coopers_Hawk/id