Nightwing

The day belongs to man but the night is theirs. Arthur Hiller directs an atmospheric creature feature that dives into the dead of night as a swarm of vampire bats turn their fangs toward an Indian reservation in New Mexico. As the winged killers spread terror, a policeman (Nick Mancuso), his girlfriend (Kathryn Harrold) and a scientist (David Warner) desperately try to stop them.