ower bird s . ▁The ▁notice able ▁difference ▁between ▁the ▁two ▁Australian ▁dwell ing ▁species ▁is ▁the ▁lack ▁of ▁black ▁ear - cover ts ▁and ▁reduction ▁in ▁d ors al ▁spot ting ▁on ▁A . ▁c ass iro str is . ▁M ole cular ▁evidence ▁suggests ▁A il uro ed us ▁is ▁a ▁sister ▁group ▁to ▁the ▁other ▁b ower bird s , ▁diver ging ▁into ▁the ▁only ▁genus ▁within ▁the ▁eight ▁species ▁of ▁Australian ▁b ower bird s ▁that ▁is ▁mon og am ous ▁and ▁does ▁not ▁build ▁a ▁b ower ▁or ▁clear ▁a ▁court ▁for ▁m ating . ▁The ▁other ▁b ower bird s ▁are ▁pol yg yn ous ▁and ▁make ▁various ▁forms ▁of ▁bow ers ▁or ▁create ▁stages ▁for ▁m ating . ▁One ▁study ▁revealed ▁the ▁cat bird s ▁have ▁a ▁smaller ▁brain ▁for ▁their ▁body ▁size ▁compared ▁to ▁the ▁b ower - building ▁species . ▁Until ▁ 2 0 1 6 , ▁A . ▁mac ulos us ▁was ▁considered ▁a ▁sub species ▁of ▁either ▁A . ▁mel an ot is , ▁then ▁also ▁named ▁the ▁sp otted ▁cat bird , ▁or ▁as ▁a ▁sub species ▁of ▁A . ▁cr ass iro str is ▁( green ▁cat bird ). ▁ ▁Hab itat ▁ ▁The ▁sp otted ▁cat bird ▁is ▁an ▁Austral o - P ap uan ▁species . ▁It ▁can ▁be ▁found ▁in ▁tropical ▁rain for est ▁and ▁is ▁locally ▁common ▁in ▁its ▁range . ▁Within ▁Australia ▁it ▁has ▁two ▁isolated ▁populations , ▁both ▁located ▁in ▁far ▁north ▁Queensland .