There's a transmission powerline that runs through near my house and there's a particular area on the line where you can see almost every day the hawks hunting.
Looks to me like hes saying "Motherf*cker, if you scare off my dinner I will peck out your eyes and f*ck your skull with my bird d*ck!"
Cooper Hawks are F'ing crazy. We had one in our yard stomping a cardinal to death and didn't know what it was. I looked it up and it kills other birds by stomping them to death or drowning them!!