A very large, robust honeyeater. Entirely drab grayish-olive with an olive cast to the wings and tail and a conical dark bill. Small yellow moustache wattle usually visible. Dependent on primary mature forest, mostly in the lowlands, but less commonly above 600 meters of elevation. Similar to Western Wattled-Honeyeater but much larger and overall more yellow, lacking a dark blackish moustache, with a more pendulous yellow wattle. Most common call is a very, very loud, ringing, far-carrying “kee-yow,” often repeated for minutes at a time.