Bloodsong by Karen Marie Christa Minns

Lesbian vampire novel, sequel to Virago.

'She trembled. The bird was still. In a state of shock, its body had gone limp. It's eyes were dull, glazed, its beak slightly open, its breath infinitesimal. Instead of horror at her deed, she felt excited by the sight of the bird's comatose body. She reached for the cowering female, scooping it from the cage with her empty hand. A snarl more animal than human emanated from Ginny's throat...'