The term 'HUGE BIRD' can be solved by the three-letter word 'EMU'. The EMU is a large, flightless bird native to Australia. It is the second-largest living bird by height, after its ratite relative, the ostrich. Emus are soft-feathered, brown, and long-legged birds with small wings and a long neck. They have long, thin, and powerful legs that allow them to run at speeds of up to 50 km/h. Emus can also swim and are known to take advantage of water sources when available.