Adult Characteristics:
The plumage is entirely white, except for a narrow black ring around the eyes. The primary wing feathers and tail feathers are dark brown. The eyes are brown. The beak is black with a blue base. The legs are yellow.
Measurements:
- Wing length: 22 – 39 mm
- Tail length: 105 – 111 mm
- Tarsus length: 11 – 12 mm
- Beak length: 360 mm
Distribution:
The species is found in the Indian Ocean.
Vietnam:
This species is present in Ba Ria province.