In case you were hoping to sit back and enjoy a schlocky, over-the-top and typically 70's "nature gone wild" creature feature (in the same trend as "Frogs", "Squirm", "Grizzly", "Night of the Lepus" or "Day of the Animals"), don't even bother to watch "Nightwing"! Yes, this movie basically handles about killer bats and features one or two virulent animal-attack sequences, but primarily this is more of a talkative and wannabe-ambitious slice of eco-horror full of pro-Indian gibberish and moralistic messages. It's actually very reminiscent to that other 1979 eco-horror flick "Prophecy", and that wasn't any good either. In an enormous and remote New Mexican reservation, traditional Indian Youngman Duran argues non-stop with progressive Indian Walker Chee. For you see, a lot of severely mutilated cattle cadavers have been discovered lately, but Chee denies the obvious infestation of vampire bats because this negatively impacts his business negotiations with a large shale-oil corporation (indeed, the "Jaws" influences are never far away in horror cinema). So instead, Duran teams up with the rather eccentric professional bat-exterminator Philip Payne. Together they attempt to track down the bats' hideout cave as well as the whereabouts of a local beauty that went missing during a Christian camping trip. My movie-buddy warned me that this wasn't going to be a light-headed trash flick, but – alas – I didn't listen. Arthur Hiller's direction is more than competent, but the screenplay adaptation deep dives too much into Indian folklore and tribal rivalries, while it stupidly neglects the creature-feature potential. A terrible shame, since the nauseating bat critters, partially from the hand of Carlo Rambaldi ("Alien", "Deep Red"), come across as rather menacing when shown in close-up. "Nightwing" isn't at all worthless and features two memorable elements: a grisly attack on a group of campers sitting around a campfire and the performance of David Warner as the skeptical bat hunter. His long speeches about how vampire bats are the embodiment of evil and how this species contribute absolutely nothing to the functioning of the environment are the undeniable highlights of the movie. He sure hates the bats with a passion!