Around daybreak, the female owl often begins “squawking”, which is a food solicitation call to the male, then flies off. Sometimes you can continue to hear her squawking in the background (and him hooting) while the eggs are untended. Other birds that start vocalizing at dawn and can almost always be heard are Northern Cardinal, Carolina Wren and, occasionally, American Crow.
Later in the morning, you will start hearing the metallic “thwack” of golfballs being hit off the adjacent tee. This sound usually occurs in fours, spaced a bit apart, as foresomes tee off right below the nest. (Fortunately we adjusted the sound so that we cannot hear the words anyone is saying on errant shots!)