"count circle" meaning in English

{
  "forms": [
    {
      "form": "count circles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "count circle (plural count circles)",
      "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": "topical",
          "langcode": "en",
          "name": "Birdwatching",
          "orig": "en:Birdwatching",
          "parents": [
            "Hobbies",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A designated radius in which bird populations are measured as part of a census."
      ],
      "id": "en-count_circle-en-noun-weiH8h~F",
      "links": [
        [
          "birdwatching",
          "birdwatching#Noun"
        ],
        [
          "designated",
          "designated"
        ],
        [
          "radius",
          "radius"
        ],
        [
          "bird",
          "bird"
        ],
        [
          "population",
          "population"
        ],
        [
          "census",
          "census"
        ]
      ],
      "raw_glosses": [
        "(birdwatching) A designated radius in which bird populations are measured as part of a census."
      ],
      "topics": [
        "biology",
        "birdwatching",
        "natural-sciences",
        "ornithology"
      ]
    }
  ],
  "word": "count circle"
}

{
  "forms": [
    {
      "form": "count circles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "count circle (plural count circles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Birdwatching"
      ],
      "glosses": [
        "A designated radius in which bird populations are measured as part of a census."
      ],
      "links": [
        [
          "birdwatching",
          "birdwatching#Noun"
        ],
        [
          "designated",
          "designated"
        ],
        [
          "radius",
          "radius"
        ],
        [
          "bird",
          "bird"
        ],
        [
          "population",
          "population"
        ],
        [
          "census",
          "census"
        ]
      ],
      "raw_glosses": [
        "(birdwatching) A designated radius in which bird populations are measured as part of a census."
      ],
      "topics": [
        "biology",
        "birdwatching",
        "natural-sciences",
        "ornithology"
      ]
    }
  ],
  "word": "count circle"
}