Bare-necked Umbrellabird, <i>Cephalopterus glabricollis</i> (male), lithograph
Lichter (artist and lithographer)
1850
<i>Proceedings of the Zoological Society of London</i> 1850 Aves plate 20, modified from <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/page/12858789">Biodiversity Heritage Library</a> / <a rel="nofollow" class="external text" href="https://archive.org/stream/lietuvostsrmoksl50liet#page/n140/mode/1up">Internet Archive</a>