Intersensory redundancy facilitates prenatal perceptual learning in bobwhite quail (Colinus virginianus) embryos.
Lickliter R, Bahrick LE, Honeycutt H. Intersensory redundancy facilitates prenatal perceptual learning in bobwhite quail (Colinus virginianus) embryos. Dev Psychol. 2002 Jan; 38(1):15-23.