aetheria/packwiz/1.20.1/config/alexsmobs/sugar_glider_spawns.json

{
  "biomes": [
    [
      {
        "type": "REGISTRY_NAME",
        "negate": false,
        "value": "minecraft:birch_forest"
      }
    ],
    [
      {
        "type": "REGISTRY_NAME",
        "negate": false,
        "value": "minecraft:old_growth_birch_forest"
      }
    ],
    [
      {
        "type": "REGISTRY_NAME",
        "negate": false,
        "value": "terralith:white_cliffs"
      }
    ]
  ]
}