Hey EMC, With the 1.6 update, Mojang recently added a new "Zombie Calling For Help" feature. Basically what this does, is if a zombie takes damage, it can call for help and spawn other zombies within a 32 block radius. After some research, I'm confused which blocks/light level these zombies spawn on - and does this feature apply on EMC? Thanks, Legend
From what I know, the zombies calling for help feature does apply on all 1.6 servers. The zombies can spawn in air, but will spawn on a block if one is available, and they can spawn on any light level too.
They are able to spawn on air, but they don't spawn when lit up. They also only spawn in a 9 block diameter.