How do you make a horse spawner in minecraft?
Solution 1:
A spawn egg will not interact with a spawner in survival mode. When a spawn egg is "used", it will spawn the mob adjacent to the surface of the block it was used on (emphasis mine):
The Player can place the Spawn Egg of choice into a Monster Spawner, before switching to Survival, which then will spawn that Mob continuously
Source
This unfortunately means that outside of commands, there is no way to create a custom mob spawner in survival mode.