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  • Title: Intersensory functioning in bobwhite quail chicks: early sensory dominance.
    Author: Lickliter R, Virkar P.
    Journal: Dev Psychobiol; 1989 Nov; 22(7):651-67. PubMed ID: 2806727.
    Abstract:
    Two sensory systems known to be important for the control of early filial behavior in precocial avian neonates are the auditory and visual modalities. This study examined the interaction between naturally occurring auditory and visual stimulation in the control of filial behavior in bobwhite quail (Colinus virginianus) during the first four days of postnatal development. Results revealed a hierarchy in the functional priority of the auditory and visual systems in the days immediately following hatchling. At one and two days of age, species identification in quail hatchlings was found to depend on the auditory component of maternal stimulation. Later in development (at three and four days of age), combined auditory-visual stimulation was necessary to control species-specific filial behavior. Even at these later stages of development, however, the auditory modality remained dominant over the visual in eliciting responsiveness to the maternal hen. These findings conform well to what is known about the neuroembryological development of the sensory systems, in that the auditory system of birds (and mammals) develops in advance of the visual system. This prenatal sequence of sensory system development appears to influence the nature of early postnatal perceptual preferences and serves to question several traditional assumptions regarding the imprinting process.
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