“…Bekoff and colleagues have extensively investigated the development of postnatal locomotor abilities in domestic chicks as they are influenced by hatching behaviors (Bekoff, 1978(Bekoff, , 1985(Bekoff, , 1986(Bekoff, , 1988(Bekoff, , 1995Bekoff, Stein, & Hamburger, 1975;Bradley & Bekoff, 1990). They have found that the coordinated behaviors manifested at hatching persist into the postnatal period, and can even be re-elicited by returning the postnatal chick to a prehatching position in a fabricated or artificial egg (Bekoff & Kauer, 1984).…”