"black-capped petrel" meaning in English

{
  "forms": [
    {
      "form": "black-capped petrels",
      "tags": [
        "plural"
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      "expansion": "black-capped petrel (plural black-capped petrels)",
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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",
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        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Tubenose birds",
          "orig": "en:Tubenose birds",
          "parents": [
            "Seabirds",
            "Birds",
            "Vertebrates",
            "Chordates",
            "Animals",
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        }
      ],
      "glosses": [
        "A species of petrel, Pterodroma hasitata, of Caribbean waters."
      ],
      "id": "en-black-capped_petrel-en-noun-Fqy4Qtzc",
      "links": [
        [
          "petrel",
          "petrel"
        ],
        [
          "Pterodroma hasitata",
          "Pterodroma hasitata#Translingual"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Pterodroma hasitata",
          "word": "karibianviistäjä"
        }
      ]
    }
  ],
  "word": "black-capped petrel"
}

{
  "forms": [
    {
      "form": "black-capped petrels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "black-capped petrel (plural black-capped petrels)",
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  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "A species of petrel, Pterodroma hasitata, of Caribbean waters."
      ],
      "links": [
        [
          "petrel",
          "petrel"
        ],
        [
          "Pterodroma hasitata",
          "Pterodroma hasitata#Translingual"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Pterodroma hasitata",
      "word": "karibianviistäjä"
    }
  ],
  "word": "black-capped petrel"
}