Flock of Killer Birds are Monsters kept in the Facility. They were not listed on the whiteboard, nor were they seen during the System Purge.
Physical Description and Characteristics[]
The Flock of Killer Birds appear as a flock of dark-colored birds, possibly crows or ravens, that are kept by the Facility, possibly because they are dangerous or have some characteristics that make them aggressive towards humans. Not much else can be said about the appearance of these birds since they are only seen once.
It is unknown what summons the Flock of Killer Birds from the Cabin's cellar. Possibilities include bird feathers, talons, a skull, etc.
Appearances[]
The Flock of Killer Birds are only seen once in the film, when the camera pans out to reveal all the Monsters held inside the Facility. They are seen flying in unison in a circle.
Inspiration[]
They are probably a reference to Alfred Hitchcock's The Birds, where swarms of killer birds attack a small, helpless town. Other films where birds kill people include Killing Birds and Birdemic: Shock and Terror.