Confusing flycatcher, fairly small and nondescript. Look for the short bill and round head that can be raised into a slight crest. Dull grayish-brown head shows only a hint of a paler line above eye. Chest is paler gray, which contrasts with the pale yellow belly. Wingbars are present but not bold. Larger and lankier than a beardless-tyrannulet. Looks rather like a diminutive Myiarchus flycatcher. The clear whistled call is a good clue. Found singly or in pairs, usually in scrubby second growth.