html'>c(NULL, "unique", "duplicate")</a></code>. Default NULL.</p></td>
    </tr>
    <tr>
      <th>cleanGrid</th>
      <td><p>logical. Whether to remove all data from the grid.</p></td>
    </tr>
    </table>

    <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

    <p>The output is a OverlaidBirds-class object, which is a list
  containing three objects;</p><dl>
    <dt><code>observationsInGrid</code></dt><dd><p>Is
      basically the data in the OrganizedBirds object spl