Imprinting: drug-produced isolation and the sensitive period.
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D002645:Chickens; D003423:Critical Period, Psychological; D007173:Imprinting, Psychological / Q000187:drug effects*; D009425:Nesting Behavior; D010424:Pentobarbital / Q000494:pharmacology*
D010424:Pentobarbital