Adult Plumage:
Summer: Exhibits a summer plumage. A prominent black stripe extends from the front of the eye to the nape, encircling the crest. The crown is white. The upper back is grayish-brown. The tail is white. The first primary feathers are dark gray on the outer edge and light gray on the inner edge; the other primary feathers are very pale gray, with white inner webs. The underparts are white, tinged with pink.
Winter: The black stripe at the eye and nape is wider and more defined.
Juvenile Plumage:
- The nape is brown, and the wing feathers are gray. The eyes are brown. The beak is black. The legs are black or dark brown.
Measurements:
- Wing: 216 – 227 mm
- Tail: 129 – 150 mm
- Tarsus: 17 – 18 mm
- Beak: 31 – 38 mm
Distribution:
- This species is distributed in the Andaman Islands, the Malayan coast, and southern Indochina.
- Vietnam: Found along the central coast and Bà Rịa province.