When incubating eggs, the female will stay in the cavity for most of the night, leaving occasionally for reasons not totally clear to us. The male is often out all night hunting and will return with prey. The male may or may not spend the day in the cavity. If not, he will roost in a nearby tree, as many BNOWs do. As chicks hatch and grow, both adults will roost outside of the cavity during the day, and deliver food at night. Once chicks fledge, the cavity may go unused for sometime until this pair, or another pair, decide to use it again for roosting and breeding. However, chicks often use the cavity to roost during the day for several weeks after they fledge.