Chromolithograph from W.Blakston, W.Swayzland, A.Wiener: <i>Canaries and Cage Birds</i>. Cassell, London 1878.
Purple-headed Glossy-starling (<i>Lamprotornis purpureiceps</i>)
William Rutledge(1732-1786)<a rel="nofollow" class="external autonumber" href="http://www.findartinfo.com/german/search/listprices.asp?keyword=130754">[1]</a>, <a href="https://en.wikipedia.org/wiki/Vincent_Brooks,_Day_%26_Son" class="extiw" title="en:Vincent Brooks, Day &amp; Son">Vincent Brooks, Day &amp; Son</a>
1878
Blakston, W. A; Swaysland, W; Wiener, August F: <a rel="nofollow" class="external text" href="https://archive.org/details/illustratedbooko00blak">The illustrated book of canaries and cage-birds, British and foreign</a> <a rel="nofollow" class="external text" href="https://archive.org/stream/illustratedbooko00blak#page/n525/mode/2up">Page 422</a>