green peafowl
Refers specifically to Pavo muticus, a species of peafowl native to Southeast Asia.
The green peafowl inhabits the forests of Southeast Asia.
Katakana spelling is standard for this bird name; the kanji form 真孔雀 is rare.
Kanji spelling; rarely used in practice.
The reading まくじゃく is likely a phonetic adaptation, possibly from Chinese or a regional name. The kanji 真孔雀 literally means 'true peafowl', distinguishing it from the more common Indian peafowl.