Chicken Jockey

Chicken Jockeys are an extremely rare mob. They consist of a Baby Zombie riding a Chicken.

Behavior

 * Chicken Jockeys run around like Baby Zombies, instead of using the chicken AI.
 * Even though the Zombie AI is used, the chicken still randomly lays eggs.
 * Chicken Jockeys will not avoid bumping into walls that would potentially suffocate the Baby Zombie.
 * Chicken Jockeys do not take fall damage, as the chicken flaps his wings quickly, slowing the falling speed.
 * The chicken moves at the speed of the Baby Zombie, which is much faster than a normal chicken.
 * Chicken Jockeys can track the player over a very large distance.
 * Like zombies, the Chicken Jockey will also track villagers.
 * They can fit through a 1-high space, but the Baby Zombie will take suffocation damage if the block above is solid.

Spawn
Zombies have a 0.05% chance (1 in 2000) of being a chicken jockey. Baby zombie pigmen can also rarely spawn riding a chicken.

Trivia

 * If the player goes far enough away, the baby zombie despawns but the chicken does not, leaving a regular chicken behind.
 * The command to spawn a Chicken Jockey is /summon Zombie ~ ~ ~ {IsBaby:1,Riding:{id:Chicken}}
 * This is not exactly the same mob, but it is close, the real Chicken Jockey is positioned lower on the Chicken's back, which you can get by spawning a large number of zombies
 * The baby zombie's hitbox is larger than the chicken's.
 * Attacking the chicken may harm the zombie instead, unless the player carefully attacks its feet.
 * If the chicken moves too close to a wall two blocks high, the zombie half will take suffocation damage unless the upper block is transparent.
 * Since they can spawn in the Nether, eggs, feathers and raw chicken are renewable, without having to bring eggs from the Overworld.

Gallery
鸡骑士