eturned as
<code>NA</code>.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">ebird_species</span><span class="op">(</span></span>
<span>  <span class="va">x</span>,</span>
<span>  type <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"scientific"</span>, <span class="st">"common"</span>, <span class="st">"code"</span>, <span 