Male adult Pied Harriers (<i>Circus melanoleucos</i>), lithograph by John Gerrard Keulemans.
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Gerrard_Keulemans" class="extiw" title="w:en:John Gerrard Keulemans"><span title="Dutch bird artist (1842-1912)">John Gerrard Keulemans</span></a>
</bdi>
1874
Anderson, John (1878) <a rel="nofollow" class="external text" href="https://archive.org/stream/Anatomicalzoolo00AndeA#page/n8/mode/1up">Anatomical and Zoological Researches: comprising an account of the Zoological results of the two expeditions to Western Yunnan in 1868 and 1875</a>. Bernard Quaritch, London.