This group includes an adult female, recognizable
white head speckled with dark spots, an adult male, which is similar
but also has a large black knob on its bill, and
several immature birds, which are identifiable by a dark brown
upperside and eyestripe, and a brownish-buff underside, cheeks and
List of Thai Animal Names.
BIRDS OF SOUTHEAST ASIA
See also POSTAGE STAMP.