Afrikaans Intelligensie by voëls Cited by user Burgert Behr on 24 Feb 2018 duimnael|220px|[[Keas is bekend vir hul intelligensie en nuuskierigheid, albei belangrike eienskappe vir oorlewing in die strawwe bergomgewing waar hulle voorkom.
Swedish Fåglars intelligens Cited by user AHA on 06 Jun 2013 Fglars intelligens avhandlar definiering och mtandet av intelligens och kognitiva frmgor hos fglar.
English Bird intelligence Cited by user Rjwilmsi on 03 Jul 2012 The difficulty of defining or measuring intelligence in non-human animals makes the subject difficult to study scientifically in birds.