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* 體背偏灰褐 色，肩羽鏽紅 色，有 暗色羽 黑 軸 與淡 斑及白 色羽緣 。* 胸白色，腹有大黑斑塊 。

# 體背偏灰褐色，有暗色軸斑及白色羽緣。# 頭頂 至後頸 有 三黑兩白冠 暗細縱 紋 較模糊， 。有 白眉 紋 線 。 # 體下白色。# 胸 側 有暗色 模糊 斑紋。

* 亞成鳥似非繁殖期，但黃褐色濃。體背 鏽紅 有黑軸斑 及白色羽緣 明顯，背羽顯得較斑駁 。 頸 胸 、 胸散佈暗 腹有不規則黑 色斑 點 塊 。

* 飛行時，有白翼帶，腰至尾中央黑、兩側白。腳 未 趾略 超出尾羽端。

群聚性，常與其他岸鳥混棲，在地面快速走動，經常涉水活動，覓食動作急促，以嘴不停在泥地上戳刺找尋食物。 在海岸潮間帶軟泥及泥沙間覓食。慢步走動啄食，偶將嘴探入泥中，有時快步小跑一段及涉行淺水。通常單獨與他種小型鷸混群。

亞種和分佈* C. a. arctica (Schiøler, 1922) – NE Greenland and, apparently this subspecies, Svalbard; winters mainly in NW Africa.* C. fa. falcinellus schinzii (PontoppidanC. L. Brehm & Schilling, 17631822) – [[斯堪的那維亞]]和[[俄羅斯]]西北部；從[[非洲]]東部（很少到[[南非]]）通過[[南美洲]][[紅海]]和[[阿拉伯]]冬季到達[[西印度群島]]和[[斯里蘭卡]]。SE Greenland and Iceland through Faeroes and N British Is to Baltic and S Scandinavia; winters in S Europe and NW Africa.* C. a. alpina (Linnaeus, 1758) – N Scandinavia and N Russia E to Taymyr region and R Yenisey; winters from W Europe and Mediterranean to NW India (and sparsely E to Bihar).* C. fa. sibirica centralis (DresserButurlin, 18761932) – [[西伯利亞]]東北部（Taymyr，R Lena NE Siberia from Taymyr Peninsula to Kolyma Delta; winters E Mediterranean and Red Sea E 至R to S Asia.* C. a. sakhalina (Vieillot, 1816) – R Kolyma ）；從東北[[印度]]到東南亞，[[菲律賓]]和[[印度尼西亞]]再到[[澳大利亞]]。to Chukotskiy Peninsula and Anadyrland; winters in E China, Korea, Japan and Taiwan, and perhaps in small numbers in W North America.* C. a. actites Nechaev & Tomkovich, 1988 – N Sakhalin I; winters probably in E Asia.* C. a. kistchinski Tomkovich, 1986 – N Sea of Okhotsk and Koryak Mts through Kamchatka to N Kuril Is; winters in E Asia.* C. a. arcticola (Todd, 1953) – NW Alaska (N of Seward Peninsula) and NW Canada; winters in E China, Korea and Japan.* C. a. pacifica (Coues, 1861) – SW Alaska (S of Seward Peninsula); winters in W USA and W Mexico.* C. a. hudsonia (Todd, 1953) – C Canada from S Victoria I to SW Hudson Bay; winters on coasts of E USA and probably E Mexico.<ref>[https://www.hbw.com/species/broad-billed-sandpiperdunlin-calidris-falcinellus broad-billed sandpiperalpina dunlin],hbw.com</ref>