Simplify the following text for a Grade 9 native English-speaking person.
Original: The Albert 's Lyrebird ( Menura alberti ) is a pheasant-sized songbird , approximately 90cm long , with brown upper body plumage and rich chestnut below .
Simplified: The Albert 's Lyrebird ( Menura alberti ) is a pheasant-sized songbird , about 90cm long , with brown upper body feathers and rich chestnut below .