[Bug] Random Mob Spawning

Penguin:
  MobType: nocsy_penguin
  Worlds: fw_normal
  Chance: 0.025
  Priority: 1
  Action: ADD
  Biomes: SNOWY_BEACH,SNOWY_PLAINS,SNOWY_SLOPES,SNOWY_TAIGA
  Conditions:
  - outside true

SnowyOwl:
  MobType: nm_owl_snowy
  Worlds: fw_normal
  Chance: 0.025
  Priority: 1
  Action: ADD
  Biomes: SNOWY_BEACH,SNOWY_PLAINS,SNOWY_SLOPES,SNOWY_TAIGA
  Conditions:
  - outside true

HornedOwl:
  MobType: nm_owl_horned
  Worlds: fw_normal
  Chance: 0.025
  Priority: 1
  Action: ADD
  Conditions:
  - outside true

The mobs are spawning randomly in plains biome instead of the listed biomes