Fig. 4: Examples of unusual and distinctive hummingbird reflectance spectra.
From: Hummingbird plumage color diversity exceeds the known gamut of all other birds
a, b saturated green + UV reflectance, c, d UV saturated reflectance, e, f low reflectance spectra with unusual UV component, g, h true purple reflectance (i.e., s + l), i, j saturated blue + green (m + l) reflectance, k highly saturated blue, and l highly saturated green (right) spectra. Spectra are labeled with the first two letters of the genus and species names and the patch: a, g Schistes geoffroyi, b Metallura phoebe, c Boissonneaua jardini, d Heliangelus viola, e Trochilus polytmus, f Klais guimeti, h Atthis ellioti ellioti, i Metallura tyrianthina smaragdinicollis, j Coeligena torquata fulgidigula, k Aglaiocercus coelestis coelestis, and l Urosticte benjamini. Reflectance spectra are in arbitrary units (See Methods).
