If a zombie/pillager is seen by villagers, they panic and increase the rate of spawn attempts. Zombies are easier to use as scaring mobs than pillagers, as you'd need a disarmed pillager (one without crossbow) for the farm to work, although pillagers have a much larger range to scare villagers than zombies, also they don't burn in sunlight

You could also speed up the trap, so there are more spaces for golems to spawn. That means, according to Ronan Forman, that the Iron Golems spawn rate is 1 per 350 seconds. They will only spawn, though, if they have the amount of space at the time. Spawn rate is 1/7000th per tick (20 ticks/second).

I found a naturally occurring village in my world and it only had 2 buildings and 2 villagers. After a few zombie raids the villagers disappeared. The original 2 buildings and the well are still there and I built 20 new doors within 4 blocks of the well. Will new villagers spawn here?
If zombies happen to be nearby, they will attempt to re-infect the zombie villager. Also, the zombie villager will still attack during its curing and it will still burn in the sunlight. Spawning [] The chance of one spawning naturally is 5%, and the chance of a villager being infected are as follows: Peaceful: 0%, Easy: 0%, Normal: 50%, Hard: 100%.
Zombie villagers no longer spawn from zombie spawners. That was changes several versions ago. On ps4 they do just sat here for 15mins then googled to see if they can saw this comment literally about to leave an then one spawned. AFAIK the current Java-Edition game code doesn’t allow for that, and it was never possible on Bedrock Edition (the
Cure some zombies: As the answer to this question indicates, zombies that spawn either in the wild or from spawners have a chance (10%) of being a zombie villager, which can then be cured using a splash potion of weakness and a golden apple. If you build a village according to the links I gave above, you can then populate it with nearby
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do zombie villagers spawn naturally