on upperwing, best clues are white-bordered, dark midwing-panel on greater coverts and white-tipped primary coverts (not white trailing edge as on Snipe);

• 其翼上最显著的特征是覆羽间显眼白色条纹，大覆羽中部黑色的翼斑和初级（大）覆羽上白色的尖端（扇尾沙锥此位置不呈现白色）