A tall, dome-headed, plover-like bird with large, yellow eyes. Mostly brownish in color, it has a grayish wing panel that is bordered above with a narrow white bar. This thick-knee never wanders far from permanent water. It is crepuscular and nocturnal; early evenings are often punctuated by its distinctive, high-pitched, piping calls that speed up then slow down. The similar Senegal Thick-knee differs by having a gray wing panel bordered above with a black bar only. Spotted Thick-knee lacks the wing panel and has spots rather than streaks on the back.