"tundra swan" meaning in English

{
  "forms": [
    {
      "form": "tundra swans",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "tundra swan (plural tundra swans)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "source": "w"
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          "name": "Pages with entries",
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Swans",
          "orig": "en:Swans",
          "parents": [
            "Anatids",
            "Freshwater birds",
            "Birds",
            "Vertebrates",
            "Chordates",
            "Animals",
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            "Life",
            "Fundamental",
            "Nature"
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          "source": "w"
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      "examples": [
        {
          "ref": "2020, Raven Leilani, Luster, Picador (2021), page 4:",
          "text": "Still, he describes [...] the yellow-breasted chats and tundra swans that would appear in his yard, looking for seed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of Bewick's swan"
      ],
      "id": "en-tundra_swan-en-noun-8Q6n-5vr",
      "links": [
        [
          "Bewick's swan",
          "Bewick's swan#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Bewick's swan"
        }
      ]
    }
  ],
  "word": "tundra swan"
}

{
  "forms": [
    {
      "form": "tundra swans",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tundra swan (plural tundra swans)",
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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "2020, Raven Leilani, Luster, Picador (2021), page 4:",
          "text": "Still, he describes [...] the yellow-breasted chats and tundra swans that would appear in his yard, looking for seed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of Bewick's swan"
      ],
      "links": [
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      "synonyms": [
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          "word": "Bewick's swan"
        }
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  ],
  "word": "tundra swan"
}