Chances are it's a red-tailed hawk, Kansas' most common bird of prey.
Redtails raise young in all corners of the state, nesting in large stick nests in the high crotches of trees. Several well-timbered parks in Wichita have held nesting redtails in recent years. Interestingly, redtails that summer in Kansas generally migrate south to winter in Oklahoma and Texas. Birds found in Kansas this time of the year probably migrated in from northern states or Canada. Like many hawks, redtails like to perch by highways so they can watch the thick grass between the road and private property.