{
  "format_version": "1.13.0",
  "minecraft:aggregate_feature": {
    "description": {
      "identifier": "minecraft:select_birch_tree_feature"
    },
    "early_out": "first_success",
    "features": [
      "minecraft:optional_fallen_birch_tree_feature",
      "minecraft:birch_tree_feature"
    ]
  }
}