Kalmar “genus” tana nufin matsayi na rarrabuwar haraji da aka yi amfani da shi a cikin ilmin halitta don haɗa nau’in jinsuna masu alaƙa. Kalmar "Melopsittacus" wani nau'in aku ne wanda aka fi sani da budgerigars ko parakeets.Saboda haka, ma'anar ƙamus na "genus Melopsittacus" zai zama nau'i na haraji ga rukuni na parrots da aka fi sani da budgerigars ko parakeets. .
