{
  "params": {
    "kind": {
      "type": "choice",
      "options": [
        "herring",
        "blackback",
        "laughing",
        "kittiwake"
      ],
      "default": "herring",
      "label": "Kind",
      "describe": "Species colouring: herring (pale grey back, pink legs), blackback (dark slate back), laughing (black hood, dark red beak), kittiwake (soft grey, small yellow beak, black legs)."
    },
    "flight": {
      "type": "choice",
      "options": [
        "gliding",
        "flapping"
      ],
      "default": "gliding",
      "label": "Flight",
      "describe": "gliding: three easy wingbeats then a long glide on crooked wings (coasting along a cliff). flapping: steady wingbeats (into the wind)."
    },
    "feet": {
      "type": "toggle",
      "default": false,
      "label": "Feet down",
      "describe": "Webbed feet lowered and spread, as when landing or hovering over chips. Off = tucked."
    },
    "size": {
      "type": "range",
      "min": 0.6,
      "max": 2,
      "step": 0.05,
      "default": 1,
      "label": "Size",
      "describe": "Uniform scale. 1 is a 1.4 m-wingspan herring gull; 0.6 is a small tern-sized gull; 2 is an albatross-sized giant."
    }
  },
  "presets": {
    "harbour gull": {
      "kind": "herring",
      "feet": true
    },
    "great black-back": {
      "kind": "blackback",
      "size": 1.2
    },
    "laughing gull": {
      "kind": "laughing",
      "flight": "flapping",
      "size": 0.8
    }
  },
  "night": null
}