The Avirs are a race of anthropomorphic birds who live in settlements at the top of mountains. It stands 5 feet tall and weighs up to 80 lbs. The males have colorful feathers while the females are usually some shade of gray and slightly larger. An avir has hands near the middle of its wings and a wingspan of 20 feet. It has extraordinary eyesight, but no Darkvision.

An avir hunts and fights in wings of 5 while holding lances with its feet. It is a master of dive attacks, getting +4 on its attack rolls and doing double damage. It also wears bladed spurs on its feet with which it can kick savagely, doing 1d6 points of damage with each, either when on the ground or when flying by. An avir kicking with only its natural spurs will only do 1d4 points of damage per kick. If unable to fly, an avir can peck for 1d4 points of damage, as a last resort. It wears leather harnesses which offers some protection and allows it to carry light items. It cannot carry more than 50 lbs. An avir has natural resistance to cold and takes half damage against magical cold attacks.

An avir trades to obtain the equipment it cannot produce itself, such as weapons, often with dwarves who live under their mountain. It also keeps good relations with giant eagles.