Young.—A half-grown downy young was obtained at Laguna de Bay, August 24, 1904. Above seal-brown with white tips to much of the down; middle of crown mottled with chestnut; a white line over eye; two diagonal white lines on each side of occiput, the anterior line continued along side of neck; chin, throat, and face mottled with white, black, and dark gray; fore breast, sides, and lower belly gray; middle of breast and belly white. Bill pale yellow mottled with blackish brown, tip gray; legs black. Length, 203.
A full-grown young bird has upper parts light brown; sides of head and neck buffy brown, mottled and streaked with white; chin and upper throat white; a wide dull buffy brown band around neck; breast and abdomen pure white; thighs buff-brown.
“Comparatively rare. Several specimens were secured by the Steere Expedition in a little pond in Guimaras. Fairly common in the Laguna de Bay, Luzon, but we failed entirely to find it in the Laguna de Naujan, Mindoro.” (Bourns and Worcester MS.)
Order PROCELLARIIFORMES.
PETRELS AND SHEARWATERS.
Bill strong and moderately long, terminating in a strong, sharp, overhanging hook or nail; nostrils impervious and tubular, opening forward or upward; feet moderate; toes webbed; hind toe small and elevated, rarely absent. Oceanic birds of strong flight and wandering habits; colors black, brown, and white. Eggs white, deposited in burrows or among piles of loose stone; young covered with down and fed for some time before leaving the nest.
Families.
- a1. Smaller; wing less than 150 mm. Procellariidæ (p. [84])
- a2. Larger; wing more than 300 mm. Puffinidæ (p. [84])
Family PROCELLARIIDÆ.
Nasal tube prominent, vertically truncated and with a thin partition.