About Pterodroma lessonii (Garnot, 1826)
Head Markings
The white-headed petrel, Pterodroma lessonii, is distinct for its pale white head and prominent dark eye patch.
Wing and Tail Structure
It has long, narrow wings and a long, pointed tail.
Upper Body Coloration
Its upper surface is pale grey, which contrasts with the darker grey colouring of its upper wings and rump.
Underside Coloration
Most of its underside is white.
Bill Characteristics
Its bill is stout and black, with a large, sharp hook.
Gland Features
Its green glands are prominent.
Leg and Toe Appearance
Its legs range from pinkish to whitish, with black patches on the toes.
