E. Finger et D. Burkhardt, BIOLOGICAL ASPECTS OF BIRD COLORATION AND AVIAN COLOR-VISION INCLUDING ULTRAVIOLET RANGE, Vision research, 34(11), 1994, pp. 1509-1514
Many diurnal birds possess a set of four spectrally different types of
cone photoreceptor. The spectral range of vision is extended into the
UV by a UV receptor. We have investigated the spectral properties of
plumage colours including the UV by reflection spectroscopy. Some basi
c general principles of colour vision indicate that plumage colours ar
e tuned to avian colour vision.