▁old ▁trees ▁( important ▁for ▁nest ing ▁sites ) ▁and ▁po aching ▁for ▁the ▁illegal ▁wild life ▁trade . ▁In ▁ 2 0 1 1 , ▁its ▁status ▁was ▁updated ▁from ▁Le ast ▁Conc ern ▁to ▁Near ▁Th re aten ed ▁on ▁the ▁IU CN ▁Red ▁List . ▁The ▁adult ▁male ▁and ▁female ▁are ▁easily ▁distinguished ▁because ▁they ▁have ▁different ▁be ak ▁colours ▁and ▁slightly ▁different ▁pl um age . ▁ ▁The ▁name ▁of ▁this ▁bird ▁comm emor ates ▁Edward ▁Stanley , ▁ 1 3 th ▁Earl ▁of ▁Derby . ▁ ▁Lord ▁Derby ' s ▁par ake ets ▁feed ▁on ▁f ruits , ▁ber ries , ▁se eds , ▁and ▁leaf ▁bud s , ▁occasionally ▁for aging ▁in ▁gard ens ▁and ▁fields . ▁ ▁Description ▁ ▁Lord ▁Derby ' s ▁par ake ets ▁are ▁ ▁in ▁length ▁and ▁are ▁sex ually ▁dim orph ic . ▁They ▁have ▁a ▁mostly ▁green ▁pl um age ▁over ▁their ▁d ors al ▁surface ▁( i . e . ▁from ▁behind ), ▁black ▁l ores ▁and ▁lower ▁che eks , ▁a ▁bl u ish - pur ple ▁crown ▁and ▁pale ▁yellow ▁eyes . ▁The ▁thro at , ▁breast , ▁ab d omen ▁and ▁under - wing ▁cover ts ▁are ▁grey ish ▁blue ▁to ▁lav ender . ▁The ▁th igh s ▁and ▁vent ▁area ▁are ▁yellow ish ▁green ▁with ▁blue ▁ed ging ▁on ▁some ▁of ▁the ▁fe athers . ▁The ▁tail ▁fe athers ▁are ▁sh ades ▁of ▁green , ▁some ▁ed ged ▁with ▁blue . ▁Male ▁birds ▁have ▁a