Biological optics: seeing colours in the dark.
The intensity threshold of colour vision has been behaviourally tested in birds; the results show that parrots lose colour vision in brighter light than humans.
Cassey
Phillip
P
Centre for Ornithology, School of Biosciences, University of Birmingham, Edgbaston B15 2TT, UK. p.cassey@bham.ac.uk
D000222:Adaptation, Physiological; D000818:Animals; D001522:Behavior, Animal; D055253:Color Vision / Q000502:physiology*; D003623:Dark Adaptation; D003624:Darkness; D010311:Parrots / Q000502:physiology*; D010775:Photic Stimulation; D012160:Retina / Q000502:physiology; D012684:Sensory Thresholds