"peppered moth" meaning in English

{
  "forms": [
    {
      "form": "peppered moths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "peppered moth (plural peppered moths)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Geometrid moths",
          "orig": "en:Geometrid moths",
          "parents": [
            "Moths",
            "Insects",
            "Arthropods",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015 May 21, Victoria Schlesinger, “Backyard evolution”, in Aeon",
          "text": "At the start of the Industrial Revolution, the common, light-coloured peppered moth stood out in the soot-covered landscape around coal plants.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A light-coloured species of night-flying moth, Biston betularia."
      ],
      "id": "en-peppered_moth-en-noun-WESF0KeJ",
      "links": [
        [
          "moth",
          "moth"
        ]
      ],
      "wikipedia": [
        "peppered moth"
      ]
    }
  ],
  "word": "peppered moth"
}

{
  "forms": [
    {
      "form": "peppered moths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "peppered moth (plural peppered moths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "Entries using missing taxonomic name (species)",
        "en:Geometrid moths"
      ],
      "examples": [
        {
          "ref": "2015 May 21, Victoria Schlesinger, “Backyard evolution”, in Aeon",
          "text": "At the start of the Industrial Revolution, the common, light-coloured peppered moth stood out in the soot-covered landscape around coal plants.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A light-coloured species of night-flying moth, Biston betularia."
      ],
      "links": [
        [
          "moth",
          "moth"
        ]
      ],
      "wikipedia": [
        "peppered moth"
      ]
    }
  ],
  "word": "peppered moth"
}