All about birds has some great background on the Cooper's Hawk. They are "among the world's most skillful fliers" because of how they can weave around tree branches in pursuit of prey. They eat other birds, including doves, which we have see a lot around here. They also eat small rodents. Cooper's Hawks have strong feet and kill their prey by grabbing it with their feet and squeezing it. They've even been known to drown their prey by holding it underwater. Another bird site says hawks, in general, have eyesight 2-3 times better than ours. Unlike other birds, the eyes of hawks and other birds of prey are set to look forward rather than on the side of their head. They mate for life and can reuse nests year after year.
This is a bit far afield. But, Cooper's Hawk is named after William Cooper, a "conchologist," who studied mollusks and other animal life. He collected specimens of many animals including a newly found type of hawk.