A Field Sparrow announcing the new day was the first bird song Aldo Leopold awoke to on his farm in the 1940s.

In his Sand County Almanac, a classic of conservation and nature writing, Leopold brought to life scenes of nature, a month at a time.

Leopold used to sit on a bench outside his cabin door, awaiting the dawn chorus of Field Sparrows, American Robins and Baltimore Orioles.

Learn more about which birds act as nature's early morning alarm clock in your neighborhood at BirdNote.org.