Redhawk Caldera I don't understand that reference.

Although she couldn't hear his approaching footfalls, Towhee's four good senses tingled. She swallowed and dropped the gob of meat as her neck straightened into a stiff column and she swept the rendezvous site with her eyes. She pinpointed everyone's location, then started slightly when an unfamiliar white figure simply appeared. The pup immediately jumped to her feet, her spine arching and tail puffing up like a cat's.

Behind her, she felt subtle vibrations but she didn't dare turn. Even when she felt a gentle tap to her hip, Towhee remained statuesque. Her eyes did dart to the side as Raven came to stand beside her. "Hello, Birk," the caregiver greeted, although Towhee was oblivious as she was now glaring fixedly at the interloper. "This is my sister, Towhee. She's deaf. And she doesn't seem to take well to strangers."

Unaware of Raven's mildly apologetic tone, Towhee broke her silence with a snarl. Since she had absolutely no volume settings, it came out extremely loud and savage.