The term 'Tropical Songbird' can be summarized by the 6-letter word 'Bulbul'. Bulbul is a type of songbird found in tropical regions, such as India, Southeast Asia, and Africa. They are known for their melodious songs and are often kept as pets. Bulbuls are small to medium-sized birds with short tails and long, pointed bills. They have a wide variety of colors, ranging from black and white to yellow and green.