"cabeza a pájaros" meaning in Spanish

{
  "forms": [
    {
      "form": "cabezas a pájaros",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mf"
      },
      "expansion": "cabeza a pájaros m or f (plural cabezas a pájaros)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish nouns with irregular gender",
          "parents": [
            "Nouns with irregular gender",
            "Irregular nouns",
            "Nouns by inflection type",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A scatterbrain"
      ],
      "id": "en-cabeza_a_pájaros-es-noun-e9XGzN1z",
      "links": [
        [
          "scatterbrain",
          "scatterbrain"
        ]
      ],
      "related": [
        {
          "word": "tener pájaros en la cabeza"
        }
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "cabeza a pájaros"
}

{
  "forms": [
    {
      "form": "cabezas a pájaros",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mf"
      },
      "expansion": "cabeza a pájaros m or f (plural cabezas a pájaros)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "related": [
    {
      "word": "tener pájaros en la cabeza"
    }
  ],
  "senses": [
    {
      "categories": [
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish nouns with irregular gender",
        "Spanish nouns with multiple genders",
        "Spanish nouns with red links in their headword lines"
      ],
      "glosses": [
        "A scatterbrain"
      ],
      "links": [
        [
          "scatterbrain",
          "scatterbrain"
        ]
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "cabeza a pájaros"
}