Waking is enough. Addressed, the vampire bat will go away. Bats are, after rodents, the second most numerous mammals on earth. The only ones to take to the air. Were once shrews, who lived, lives underground.
Placental bats take to an ulterior night's air.
Placental vampires serve a purpose Arjuna would have understood. We must voyage into a night, as if it were a kind of day. Explore the ulterior for interior reasons. Navigate like Polynesians by the feel of winds, our body's pulse, hunger and fatigue, our breath, smell, the sun, stars, watching birds, high clouds and counting the days. Watching night's placental bats.