Fig. 4. Reflectance spectra of structurally coloured avian ornaments: (A) Oxyura jamaicensis, light blue; (B) Lophura bulweri, dark blue; (C) Lophophorus impejanus, dark blue; (D) Tragopan temminckii, dark blue; (E) Tragopan temminckii, light blue; (F) Tragopan caboti, orange; (G) Syrigma sibilatrix, light blue; (H) Ramphastos toco, dark blue and (I) Dyaphorophyia concreta, yellow-green.