Swamp Harrier <i><a href="//commons.wikimedia.org/wiki/Circus_approximans" title="Circus approximans">Circus approximans</a></i> <small>Peale, 1848</small> (syn. <i>Circus wolfi</i>), adult males (right, top left) and immature male (bottom left). Named here by J. H. Gurney after artist Joseph Wolf
<bdi><a href="https://en.wikipedia.org/wiki/en:Joseph_Wolf" class="extiw" title="w:en:Joseph Wolf"><span title="German artist (1820-1899)">Joseph Wolf</span></a>
</bdi>
1865
<i>Proceedings of the Zoological Society of London</i> (<a rel="nofollow" class="external text" href="https://archive.org/details/proceedingsofgen65zool">vol. 1865</a>, <a rel="nofollow" class="external text" href="https://archive.org/stream/proceedingsofgen65zool#page/n935/mode/1up">plate XLIV</a>)