Visual sensitivity in the black-bellied tree duck (Dendrocygna autumnalis), a crepuscular species.
D000222:Adaptation, Physiological; D000818:Animals; D002940:Circadian Rhythm; D004372:Ducks / Q000033:anatomy & histology / Q000502:physiology*; D008027:Light; D010775:Photic Stimulation; D012160:Retina / Q000033:anatomy & histology / Q000502:physiology; D013045:Species Specificity; D014785:Vision, Ocular; D014796:Visual Perception