Oxypogon cyanolaemus1883StillImageDrawing depicting: Oxypogon guerinii cyanolaemus -- Bearded Helmetcrest. Alternate name on piece: Oxypogon cyanolaemusGould, John , 1804-1881 (artist)Hart, William Matthew , 1830-1908 (artist)Very rough layout drawing, an irregular fragment torn from a full sheet, and preserving one bird and part of a second. The species is given with the authority of Ibis, April 1880, and there is a remnant of what appears to be a Curtis citation, "3rd series, v.12."ku-gould:19533https://digital.lib.ku.edu/ku-gould/19533Gould 634OrnithologyOrnithological illustrationOxypogon cyanolaemuselectronicimage/tiffMonograph of the Trochilidae, or family of hummingbirds--Ellis Aves H91This work is free of known copyright restrictions.