One of the rituals of my family (well, maybe just my father) is to shout "hawk!" when we are driving down the road. This happens whenever he spots a hawk on in a tree, flying overhead, on a light pole, on a fence post, pouncing on a mouse in a field, etc.
That and to randomly shout "blackbird!" in the same way - this one though is unconnected to an actual bird sighting and has something to do with a Kerouac poem. I'm not really sure. (This disappoints him. He insists that we check here at about 7:40 minutes in, if you want to know). Hawk sightings are pretty cool, especially in the city. Driving on the highway though does not make for good opportunities to stop and take a picture. We have gotten lucky a couple times in some of the city's cemeteries and on Belle Isle, but we see many more than we get pictures of. Identifying different types of hawks is difficult - takes experience. A really great place to see pictures of hawks and other raptors that pass through our area is the Facebook page of Detroit River Hawk Watch. It is a worth looking at. They also have a web page that gives more information on hawks along the Detroit river. Their page has a graph that shows the times of the year when different hawks are passing through. Clink on the photo (from their webpage) to see a larger version of the graph.