Stray

Strays are a variation of skeletons that only appear in certain biomes.

Spawning
80% of Skeletons spawned in ice plains, ice mountains, and ice spikes biomes having a view of the sky will be Strays. Spiders spawned in said biomes have a chance of spawning with a Stray riding it.

Behavior
Strays behave much the same as normal skeletons do. However, they shoot tipped arrows that inflict slowness for 30 seconds on any target that it hits. Despite shooting slowness arrows, Strays are not immune to slowness.

Drops
Strays drop 0-2 bones, and 0-2 arrows upon death.

If a stray picks up any equipment, that equipment will always drop with the same durability upon death.

Strays have a 8.5% (Looting I: 9.5% - Looting II: 10.5% - Looting III: 11.5%) chance of dropping naturally spawning equipment (including bow) with random durability.

When blown up by a charged creeper, the Stray will drop a Skeleton head unless a different mob is blown up by the same charged creeper. If two or more mobs that can drop mob heads are blown up by the same charged creeper, the closest one will drop its head.

Strays have a 50% chance to drop a tipped arrow of Slowness. With Looting, this chance increases to $2×level+1/2×level+2$.