Boid

Good

The Boid is an inoffensive bird-like creature seen on Xen (not to be confused with the Manta Ray).

Overview
The Boids are made of two wings and glide in flocks of three or more, flapping their sides and emitting soothing resonant calls. The Boid has no AI and does not react to the player or the other NPCs actions, even though interaction animations exist.

Standard Boid
The standard boid wings have several shades of blue, pink and yellow and its main body is grey. At the center and on each side of its body, the creature seems to have four red eyes and a mouth.

Yellow Boid


The yellow Boid was to appear in Half-Life but was cut before the release. It was however brought back in Blue Shift, making its way into the canon like the Chumtoad, also initially cut. It is completely yellow and has three red eyes on each side of its wings, but looking straight ahead, compared to the standard Boid, having its eyes looking upwards and downwards.

Behind the scenes

 * Valve has revealed that the Boid is just a way of simulating birds on Xen.

List of appearances
Half Life Opposing Froce
 * Half-Life
 * Half-Life: Blue Shift