"Brewer's blackbird" meaning in English

{
  "etymology_text": "Named after the ornithologist Thomas Mayo Brewer.",
  "forms": [
    {
      "form": "Brewer's blackbirds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Brewer's blackbird (plural Brewer's blackbirds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Icterids",
          "orig": "en:Icterids",
          "parents": [
            "Perching birds",
            "Birds",
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Euphagus cyanocephalus, a medium-sized New World blackbird."
      ],
      "id": "en-Brewer's_blackbird-en-noun-YxK-abJv",
      "links": [
        [
          "New World",
          "New World"
        ],
        [
          "blackbird",
          "blackbird"
        ]
      ]
    }
  ],
  "word": "Brewer's blackbird"
}

{
  "etymology_text": "Named after the ornithologist Thomas Mayo Brewer.",
  "forms": [
    {
      "form": "Brewer's blackbirds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Brewer's blackbird (plural Brewer's blackbirds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "Entries using missing taxonomic name (species)",
        "en:Icterids"
      ],
      "glosses": [
        "Euphagus cyanocephalus, a medium-sized New World blackbird."
      ],
      "links": [
        [
          "New World",
          "New World"
        ],
        [
          "blackbird",
          "blackbird"
        ]
      ]
    }
  ],
  "word": "Brewer's blackbird"
}