Grey-rumped Swift (above), Cassin's Spinetail (below)
Joseph Wolf ?
1863
<i>Proceedings of the Zoological Society of London</i> (<a rel="nofollow" class="external text" href="https://archive.org/details/proceedingsofgen63busi">vol. 1863</a>, <a rel="nofollow" class="external text" href="https://archive.org/stream/proceedingsofgen63busi#page/n146/mode/1up">plate XIV</a>)