part of nidopallium BTO:0003389 BrendaTissueOBO The nidopallium, meaning nested pallium, is the region of the avian brain that is used mostly for some types of executive functions but also other higher cognitive tasks. The region was renamed to nidopallium in 2002 during the Avian Brain Nomenclature Consortium because the prior name suggested that the region was used for more primitive functions. nested pallium avian pallium