To Kill a Mockingbird?
Sometimes let a bird sing.
A bird sings in the Dawn's early light? Pretty much when the battle has been won.
A bird sings when marking territory? When the nest is protected?
A bird sings when mating? Birds do not sleep in beds but mockingbirds can make strange bedfellows nontheless.
https://en.wikipedia.org/wiki/To_Kill_a_Mockingbird_(film)#Plot
Autumn arrives, and Scout and Jem attend a nighttime Halloween pageant at their school. Scout wears a large hard-shelled ham costume, portraying one of Maycomb county's products. At some point during the pageant, Scout's dress and shoes are misplaced. She is forced to walk home without shoes, wearing her ham costume. While cutting through the woods, Scout and Jem are attacked by an unidentified man who has been following them. Scout's costume, like an awkward suit of armor, protects her from the attack but restricts her movement and severely restricts her vision. Jem is knocked unconscious and Scout escapes unharmed in a brief but violent struggle. Their attacker is thwarted and overcome by another unidentified man. Scout escapes her costume in time to see the second man carrying Jem to their home. Scout follows the stranger inside and runs into the arms of a concerned Atticus. Doc Reynolds comes over and treats the broken arm of an unconscious Jem.
When Sheriff Tate asks Scout what happened, she sees a man standing quietly in the corner behind the door of Jem's room. Atticus formally introduces Scout to Arthur Radley, whom she has known as Boo, the man who came to the aid of Jem and Scout in the woods. It is revealed that Boo had overpowered Bob Ewell before carrying Jem home. The sheriff reports that Ewell was discovered dead at the scene of the attack with a knife in his ribs. Atticus assumes that Jem killed Ewell in self-defense. Sheriff Tate, however, believes that Boo killed Ewell in defense of the children, and he tells Atticus that to drag the shy and reserved Boo into the spotlight for his heroism would be "a sin". To protect Boo, Sheriff Tate suggests that Ewell "fell on his knife". Scout draws a startlingly precocious analogy, likening unwelcome public attention to Boo to the killing of a mockingbird.
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When does one become a mockingbird that sings its heart out for us?