'parrot-related' originates from English, specifically the words 'parrot' and 'related', where 'parrot' ultimately comes from Middle French 'perroquet' and 'related' comes from Latin 'relatus' (past participle of 'referre').

'parrot' changed from Middle French 'perroquet' and eventually became the modern English word 'parrot'. 'related' changed from Latin 'relatus' through Old French and Middle English forms and eventually became the modern English 'related'.

Initially, 'parrot' referred specifically to the bird (as it does now), while 'related' originally meant 'brought back' or 'referred' in Latin and over time evolved to mean 'connected' or 'having a relation to' in modern English; combined, 'parrot-related' now means 'connected to parrots'.