title: A new method for recording migratory restlessness in caged birds.
mesh_terms: D000392:Air Movements; D000818:Animals; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm; D003624:Darkness; D004581:Electronics / Q000295:instrumentation*; D008027:Light; D008722:Methods; D009043:Motor Activity; D013686:Telemetry / Q000379:methods*