Here on our Littleton, Colorado, farm, one does not need an alarm clock. Our resident spotted towhees begin calling at the first light of dawn, often right outside our bedroom window. Unfortunately, in mid summer, that is usually about 5 AM.
I challenge anyone to keep sleeping when a towhee is delivering its loud, ringing call a few feet away. You might as well heed its not-so-subtle suggestion and get an early start on the day.
We have a family of spotted towhees on the farm and their calls do not end with the sunrise. Indeed, they are our most vocal residents at any time of day. Should we decide to retire at sunset, they will sing us to sleep as well.