Flocks 
                        of crows range widely for food, up to 30 miles a day in 
                        winter. Foods include grasshoppers, caterpillars, grubs, 
                        worms, most insects, grain, fruit, the eggs and young 
                        of other birds, organic garbage -- just about anything 
                        that they can find or overpower. Crows also feed on the 
                        carcasses of winter- and road-killed animals.
                      Crows 
                        have extremely keen senses of sight and hearing. They 
                        are wary and usually post sentries while they feed. Sentry 
                        birds watch for danger, ready to alert the feeding birds 
                        with a sharp alarm caw. Once aloft, crows fly at 25-30 
                        mph; with a strong tail wind, they can hit 60. These skillful 
                        fliers have a large repertoire of moves designed to throw 
                        off airborne predators.
                      A 
                        nest site is usually chosen away from those of other crows. 
                        Most often, nests are built in the crotch of a tree, 10-70 
                        feet above ground, usually more than 25 feet. A typical 
                        crow's nest is a large, substantial basket, 22-26 inches 
                        across, built of twigs, sticks, bark and vines. The deep 
                        central cup is lined with moss, shredded bark, grass, 
                        deer hair, fur, feathers or similar material.