Pigeons from Hell

Two men in a car wandered in search of adventure. They decided to spend the night in a deserted house they happened to stumble upon. In the middle of the night, one of them went off to investigate the sounds of a strange whistling coming from the upper floor. When he came back, he returned a corpse with an axe in his hands.

Griswелл, the one left alive, barely managed to survive. With the help of the local sheriff, he tries to find out who—or what—lives in the cursed house.

Another title: Doves from Hell.