idyr.tidyverse.org/reference/nest.html">nest</a></span>(<span class="kw">nested</span> <span class="kw">=</span> <span class="no">Species</span>) <span class="kw">%&gt;%</span>
  <span class="fu"><a href="https://dplyr.tidyverse.org/reference/mutate.html">mutate</a></span>(
    <span class="kw">component</span> <span class="kw">=</span> <span class="fu"><a href="https://purrr.tidyverse.org/reference/map.html">map</a></span>(<span class="no">nested</span>, <span class="no">heddle</span>, <span class="st">"Th