title: Visual pigments and colour vision in a nocturnal bird, Strix aluco (tawny owl).
mesh_terms: D000818:Animals; D001717:Birds / Q000378:metabolism / Q000502:physiology*; D003118:Color Perception / Q000502:physiology*; D010786:Photoreceptor Cells / Q000032:analysis; D012168:Retinal Pigments / Q000032:analysis*; D013053:Spectrophotometry; D014792:Visual Acuity
chemical_list: D012168:Retinal Pigments