T'vaoan

"A new species joins the familiar antagonists: a cousin of the Jackals called the Skirmishers, who are deadly and cunning enemies who attack in packs and flank secured positions."

- Game Informer, February 2010

The Skirmisher is a unit related to the Kig-Yar.

The Covenant uses them as close-range combatants, attacking in packs and using flanking tactics. Physically, they seem to be similar to the normal Jackals, but their heads are very different.