grey parrot; African grey parrot
Refers specifically to Psittacus erithacus, a popular pet parrot known for its intelligence and talking ability.
African grey parrots are very smart and learn human speech well.
The kanji 洋 (ocean, Western) and 鵡 (parrot) combine to mean 'Western parrot', likely a coined term for the African grey parrot. The katakana form ヨウム is the standard modern spelling.